/controller/compressor.php

<?php
/**
 * File from WEBO Site SpeedUp, WEBO Software (http://www.webogroup.com/)
 * Gzips and minifies the JavaScript and CSS within the head tags of a page.
 * Can also gzip and minify the page itself
 * and 100+ other cool web performance optimization techniques
 * Based on Web Optimizer, which was based on PHP Speedy
 *
 **/
class web_optimizer {

	/**
	* Constructor
	* Sets the options and defines the gzip headers
	**/
	function web_optimizer ($options = false) {
		$currency = empty($_COOKIE['WSS_CURRENCY']) ? $options['options']['currency'] : $_COOKIE['WSS_CURRENCY'];
		$rurl = empty($options['uri']) ? empty($_SERVER['REQUEST_URI']) ? '' : $_SERVER['REQUEST_URI'] : $options['uri'];
		$homepage = empty($options['options']['html_cache']['ignore_list']) && empty($options['options']['restricted']) ? '' :
			in_array($rurl, array('/', '/index.php', '/index.html', '/#' . $currency));
/* skip processing if disabled or restricted */
		if (!empty($_GET['web_optimizer_disabled']) || (!empty($options['options']['restricted']) &&
			(preg_match("@" . preg_replace("/ /", "|", preg_replace("/([\?!\^\$\|\(\)\[\]\{\}])/", "\\\\$1", $options['options']['restricted'])) . "@", $rurl))) ||
			(strpos($options['options']['restricted'], '#') !== false && $homepage)) {
				$this->options['active'] = 0;
				return;
		}
/* A/B testing,  */
		if (!empty($options['options']['footer']['ab'])) {
			if (empty($_COOKIE['WSS_DISABLED']) && empty($_COOKIE['WSS_ENABLED'])) {
				$ab = (microtime()*100)%100 < round($options['options']['footer']['ab']);
				setcookie($ab ? "WSS_ENABLED" : "WSS_DISABLED", 1, time() + 60*60, '/', $_SERVER['HTTP_HOST'], false, true);
				if (!$ab) {
					$_COOKIE['WSS_DISABLED'] = 1;
				}
			}
		}
/* initialize chained optimization */
		$this->web_optimizer_stage = round(empty($_GET['web_optimizer_stage']) ? 0 : $_GET['web_optimizer_stage']);
		$this->debug_mode = empty($_GET['web_optimizer_debug']) && empty($_COOKIE['web_optimizer_debug']) ? 0 : 1;
/* allow merging of other classes with this one */
		foreach ($options as $key => $value) {
			$this->$key = $value;
		}
/* get chained optimization params */
		if (!empty($this->web_optimizer_stage)) {
			$this->username = htmlspecialchars(empty($_GET['username']) ? '' :
				$_GET['username']);
			$this->password = htmlspecialchars(empty($_GET['password']) ? '' :
				$_GET['password']);
			$this->auto_rewrite = round(empty($_GET['auto_rewrite']) ? '' :
				$_GET['auto_rewrite']);
			$this->chained_redirect = 'http://' .
				$this->options['host'] .
				str_replace($this->options['document_root'], '/', $this->options['html_cachedir']) .
				'optimizing.php';
			$this->cache_version = round(empty($_GET['cache_version']) ? '' :
				$_GET['cache_version']);
/* get major stage number, all stages:
 -1		- system, envelope all <script> to try-catch-document.write
 0-9	- inilialization, starts in administrative interface
 10-13	- JS file generation, 1st major stage (common browsers)
 14-19	- CSS Sprites / data:URI generation, 1st major stage
 20-24	- CSS file generation + page parsing, 1st major stage
 25-28	- JS file generation, 2nd major stage (IE 6.0)
 29-34	- CSS Sprites / mhtml generation, 2nd major stage
 35-39	- CSS file generation + page parsing, 2nd major stage
 40-43	- JS file generation, 3rd major stage (IE 7.0)
 44-49	- CSS Sprites / mhtml generation, 2nd major stage
 50-54	- CSS file generation + page parsing, 2nd major stage
 55-58	- JS file generation, 4th major stage (IE 8.0)
 59-64	- CSS Sprites / data:URI generation, 4th major stage
 65-69	- CSS file generation + page parsing, 4th major stage
 70-73	- JS file generation, 5th major stage (IE 7.0 @ Vista)
 74-79	- CSS Sprites generation, 5th major stage
 80-84	- CSS file generation + page parsing, 5th major stage
*/
			$this->cache_stage = floor(($this->web_optimizer_stage - 10) / 15);
		}
		$this->options['active'] = $this->debug_mode ? 1 : $this->options['active'];
/* disable any actions if not active */
		if (empty($this->options['active'])) {
			return;
		}
/* define head of the webpage for scripts / styles */
		$this->head = '';
/* remember current time */
		$this->time = empty($_SERVER['REQUEST_TIME']) ? time() : $_SERVER['REQUEST_TIME'];
/* skip buffering (need for integration as plugin) */
		$this->buffered = $this->options['buffered'];
/* Sets User Agent to differ IE from non-IE */
		$this->ua = empty($_SERVER['HTTP_USER_AGENT']) ? '' : $_SERVER['HTTP_USER_AGENT'];
/* HTTPS or not ? */
		$this->https = empty($_SERVER['HTTPS']) ? '' : 's';
/* Set list of outdated IE */
		$this->ies = array('.ie4', '.ie5', '.ie6', '.ie7');
/* Set options */
		$this->set_options();
/* Include base plugin class */
		if (is_array($this->options['plugins'])) {
			include_once($this->options['css']['installdir'] . 'libs/php/class.plugin.php');
		}
/* Remember current page encoding */
		$this->encoding = '';
/* Define the gzip headers */
		$this->set_gzip_headers();
/* Deal with flushed content or not? */
		$this->flushed = false;
		$excluded_html_pages = '';
		$included_user_agents = '';
		$restricted_cookie = 0;
		if (!empty($this->options['page']['cache'])) {
			$this->start_cache_engine();
			if (!empty($this->clear_cache_key)) {
				$this->clear_html_cache($this->clear_cache_key);
			}
/* HTML cache ? */
			if (!empty($this->options['page']['cache_ignore'])) {
				$excluded_html_pages = preg_replace("/ /", "|", preg_replace("/([\?!\^\$\|\(\)\[\]\{\}])/", "\\\\$1", str_replace(array('# ', '#'), '', $this->options['page']['cache_ignore'])));
			}
			if (!empty($this->options['page']['allowed_user_agents'])) {
				$included_user_agents = preg_replace("/ /", "|", preg_replace("/([\?!\^\$\|\(\)\[\]\{\}])/", "\\\\$1", $this->options['page']['allowed_user_agents']));
			}
			if (!empty($this->options['page']['exclude_cookies'])) {
				$cookies = explode(" ", $this->options['page']['exclude_cookies']);
				foreach ($cookies as $cookie) {

					if ($e = strpos($cookie, '=')) {
						$c = substr($cookie, 0, $e);
						$e = substr($cookie, $e+1);
						if (isset($_COOKIE[$c]) && $_COOKIE[$c] == $e) {
							$restricted_cookie = 1;
						}
					} else {
						if (isset($_COOKIE[$cookie])) {
							$restricted_cookie = 1;
						}
					}
				}
			}
		}
/* cache if
  - option is enabled,
  - don't parse excluded pages (including home page),
  - or parse included USER AGENTS,
  - don't parse pages with excluded coockies,
  - flush or gzip for HTML are disabled,
  - headers have not been sent,
  - page is requested by GET,
  - no chained optimization,
  - no debug mode,
  - external cache restriction,
  - exclude domains except the activated one for non-corporate licenses,
  - disable cache in case of negative A/B test.
*/
		$this->cache_me = !empty($this->options['page']['cache']) &&
			((empty($this->options['page']['cache_ignore']) && !$this->options['page']['ignore_include']) ||
				(!$this->options['page']['ignore_include'] && 
				(!$excluded_html_pages || !preg_match("!" . $excluded_html_pages . "!is", $this->uri)) &&
				(strpos($this->options['page']['cache_ignore'], '#') === false || !$homepage)) ||
				($this->options['page']['ignore_include'] &&
				(($excluded_html_pages && preg_match("!" . $excluded_html_pages . "!is", $this->uri)) ||
				(strpos($this->options['page']['cache_ignore'], '#') !== false && $homepage))) ||
				!$this->ua ||
				($included_user_agents && preg_match("!" . $included_user_agents . "!is", $this->ua))) &&
			!$restricted_cookie &&
			(empty($this->options['page']['gzip']) ||
				empty($this->options['page']['flush'])) &&
			!headers_sent() &&
			(getenv('REQUEST_METHOD') == 'GET') &&
			empty($this->web_optimizer_stage) &&
			!$this->debug_mode &&
			empty($this->no_cache) &&
			($this->premium == 3 || strpos($this->options['host'], $this->host) !== false) &&
			(empty($this->options['page']['ab']) || empty($_COOKIE['WSS_DISABLED']));
/* check if we can get out cached page */
		if (!empty($this->cache_me)) {
			$this->uri = $this->convert_request_uri(empty($this->uri) ? '' : $this->uri);
			$jutility = class_exists('JUtility', false);
			$jsession = class_exists('JSession', false);
/* gzip cached content before output? (plugins have onCache), JUtility must parse content */
			$gzip_me = is_array($this->options['plugins']) || $jutility || $jsession;
			$cache_plain_key = $this->view->ensure_trailing_slash($this->uri) .
				'index' .
				$this->ua_mod .
				'.html' .
				($this->options['page']['https_separate'] ? $this->https : '');
			$cache_key = $cache_plain_key .
				($this->options['page']['flush'] ||
				empty($this->encoding_ext) ||
				$gzip_me ? '' : $this->encoding_ext);
			$timestamp_ajax = 0;
			$cache_key_ajax = $cache_plain_key . '.ajax';
			if (defined('WSS_CACHE_MISS')) {
				$timestamp = 0;
			} else {
				$timestamp = $this->cache_engine->get_mtime($cache_key);
				if ($this->options['page']['ajax_timeout']) {
					$timestamp_ajax = $this->cache_engine->get_mtime($cache_key_ajax);
				}
			}
/* try to get from cache non-gzipped page if gzipped one doesn't exist */
			if (!$timestamp && !$this->options['page']['flush'] && !empty($this->encoding_ext) && !$gzip_me) {
				$timestamp = $this->cache_engine->get_mtime($cache_plain_key);
				$gzip_me = 1;
			}
			if (!$timestamp && !$timestamp_ajax && !defined('WSS_CACHE_MISS')) {
				define('WSS_CACHE_MISS', 1);
			}
			if (($timestamp &&
				$this->time - $timestamp < $this->options['page']['cache_timeout'] &&
				($content = $this->cache_engine->get_entry($gzip_me ? $cache_plain_key : $cache_key))) ||
				($timestamp_ajax &&
				$this->time - $timestamp_ajax < $this->options['page']['ajax_timeout'] &&
				($content = $this->cache_engine->get_entry($cache_key_ajax)))) {
				if ($jutility) {
					$token = JUtility::getToken();
				}
				elseif ($jsession) {
					$token = JSession::getFormToken();
				}
				if (!empty($token)) {
					$content = str_replace('##WSS_JTOKEN_WSS##', $token, $content);
				}
/* execute plugin-specific logic */
				if (is_array($this->options['plugins'])) {
					foreach ($this->options['plugins'] as $plugin) {
						$plugin_file = $this->options['css']['installdir'] . 'plugins/' . $plugin . '.php';
						if (@is_file($plugin_file)) {
							include_once($plugin_file);
							$web_optimizer_plugin = new $plugin;
							$content = $web_optimizer_plugin->onAfterOptimization($content);
						}
					}
				}
				$hash = crc32($content) . (empty($this->encoding) ? '' : '-' . str_replace("x-", "", $this->encoding));
/* check for return visits */
				if ((isset($_SERVER['HTTP_IF_NONE_MATCH']) &&
					stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) == '"' . $hash . '"') ||
					(isset($_SERVER['HTTP_IF_MATCH']) &&
					stripslashes($_SERVER['HTTP_IF_MATCH']) == '"' . $hash . '"')) {
/* return visit and no modifications, so do not send anything */
					@header ("HTTP/1.0 304 Not Modified");
					@header ("Content-Length: 0");
					$this->di();
				}
/* define gzip headers */
				$this->set_gzip_header();
				if ($gzip_me && $this->encoding) {
					$cnt = $this->create_gz_compress($content, in_array($this->encoding, array('gzip', 'x-gzip')));
					if (!empty($cnt)) {
						$content = $cnt;
/* skip gzip if we can't compress content */
					} else {
						$this->options['page']['gzip'] = 0;
						$this->encoding = '';
					}
				}
/* set ETag, thx to merzmarkus */
				@header("ETag: \"" . $hash . "\"");
				if ($gzip_me && ($this->encoding || empty($this->gzip_set)) && (empty($_SERVER['SERVER_PROTOCOL']) || $_SERVER['SERVER_PROTOCOL'] == 'HTTP/1.0')) {
					@header("Content-Length: " . strlen($content));
				}
/* set content-type */
				if (!empty($this->options['charset'])) {
					@header("Content-Type: text/html; charset=" . $this->options['charset']);
				}
				if (empty($this->web_optimizer_stage) &&
					$this->options['page']['clientside_cache']) {
/* not really GMT but is valid locally */
					$ExpStr = date("D, d M Y H:i:s",
						$this->time + $this->options['page']['clientside_timeout']) . " GMT";
					@header("Cache-Control: " .
						($this->options['page']['gzip'] ? 'private' : 'public') .
						", max-age=" .
						$this->options['page']['clientside_timeout']);
					@header("Expires: " . $ExpStr);
				}
				while (@ob_end_clean());
				@header('WEBO: cache hit');
				echo $content;
/* content is a head part, flush it after */
				if ($this->options['page']['flush']) {
					flush();
					$this->flushed = true;
				} else {
					$this->di(1);
				}
			} else {
				@header('WEBO: cache miss');
			}
		} elseif (!empty($this->options['page']['cache'])) {
			@header('WEBO: cache miss');
		}
/* remember Joomla! caching (VirtueMart) */
		$this->joomla_cache = $this->options['page']['cache'] && (class_exists('JUtility', false) || class_exists('JSession', false));
/* remember WordPress caching (WP Digi Cart) */
		$this->wp_cache = defined('WP_CACHE') && @is_dir($this->options['document_root'] . 'wp-content/plugins/wp-cart-for-digital-products/');
/* remember Generic caching for other carts */
		$this->generic_cache = !$this->joomla_cache && !$this->wp_cache && $this->options['page']['cache'];
/* change some hosts if HTTPS is used */
		if ($this->https && !empty($this->options['page']['parallel_https'])) {
			$this->options['javascript']['host'] =
			$this->options['css']['host'] =
			$this->options['page']['parallel_hosts'] = 
			$this->options['page']['parallel_https'];
		}
/* number of external files calls to process */
		$this->initial_files = array();
/* set internal encoding */
		$this->charset = empty($wss_encoding) ? 'utf8' : $wss_encoding;
/* prepare escaped host */
		$this->host_escaped = str_replace('.', '\.', $this->host);
/* activate application */
		$this->options['active'] = 1;
		if ($this->buffered) {
/* Start things off */
			$this->start();
		}
	}

	/**
	* Write installation progress to JavaScript file
	*
	**/
	function write_progress ($progress) {
		$this->write_file($this->options['javascript']['cachedir'] . 'progress.php', $progress);
	}

	/**
	* Options are read from config.webo.php
	**/
	function set_options () {
/* Set paths with new options */
		$this->options['document_root'] = empty($this->options['document_root']) ? '' : $this->options['document_root'];
		$this->view->set_paths($this->options['document_root']);
/* Set local root if chained optimization */
		if (!empty($this->web_optimizer_stage)) {
			$this->view->paths['full']['current_directory'] = $this->view->paths['full']['document_root'];
			$this->view->paths['relative']['current_directory'] = $this->view->paths['relative']['document_root'];
			$_SERVER['REQUEST_URI'] = '/';
/* force User Agent on chained optimization */
			$mods = array(
/* all common browsers except IE */
				'',
/* IE 6.0, when will it die? */
				'.ie6',
/* IE 7.0 */
				'.ie7',
/* IE 8.0 */
				'.ie8',
/* Mobile Agents */
				'.ma',
/* dummy UA, thx to peterbowey */
				'.end'
			);
			$this->ua_mod = $mods[$this->cache_stage];
		}
		$this->premium = $this->view->validate_license($this->options['license'], $this->options['html_cachedir'], $this->options['host']);
		$this->set_user_agent();
		$webo_cachedir = $this->view->unify_dir_separator(realpath(dirname(__FILE__) . '/../') . '/');
/* ensure trailing slashes */
		$this->options['html_cachedir'] = $this->view->ensure_trailing_slash($this->options['html_cachedir']);
		$this->options['css_cachedir'] = $this->view->ensure_trailing_slash($this->options['css_cachedir']);
		$this->options['javascript_cachedir'] = $this->view->ensure_trailing_slash($this->options['javascript_cachedir']);
/* normalize host */
		if (!empty($this->options['host'])) {
			$this->options['host'] = preg_replace("!^https?://!", "", $this->options['host']);
		}
/* Read in options */
		$full_options = array(
			"javascript" => array(
				"cachedir" => $this->options['javascript_cachedir'],
				"cachedir_relative" => str_replace($this->options['document_root'], "/", $this->options['javascript_cachedir']),
				"installdir" => $webo_cachedir,
				"gzip" => $this->options['gzip']['javascript'] &&
					((!$this->options['htaccess']['mod_gzip'] &&
						!$this->options['htaccess']['mod_deflate'] &&
						(!$this->options['htaccess']['mod_rewrite'] ||
							!$this->options['htaccess']['mod_mime'] ||
							!$this->options['htaccess']['mod_expires'])) ||
					!$this->options['htaccess']['enabled']),
				"gzip_level" => round($this->options['gzip']['javascript_level']),
				"minify" => $this->options['minify']['javascript'],
				"minify_body" => $this->options['minify']['javascript_body'],
				"minify_with" => $this->options['minify']['with_jsmin'] ?
					'jsmin' : ($this->options['minify']['with_yui'] && $this->premium > 1 ?
					'yui' : ($this->options['minify']['with_packer'] && $this->premium ?
					'packer' : ($this->options['minify']['with_google'] && $this->premium > 1 ?
					'google' : ''))),
				"minify_try" => $this->options['external_scripts']['include_try'] &&
					$this->premium,
				"minify_exclude" => $this->options['external_scripts']['minify_exclude'],
				"remove_duplicates" => $this->options['external_scripts']['duplicates'] &&
					$this->premium,
				"far_future_expires" => $this->options['far_future_expires']['javascript'] &&
					!$this->options['htaccess']['mod_expires'],
				"far_future_expires_php" => $this->options['far_future_expires']['javascript'],
				"far_future_expires_rewrite" => $this->options['htaccess']['mod_rewrite'] &&
					$this->options['htaccess']['enabled'] &&
					$this->options['far_future_expires']['javascript'],
				"far_future_expires_static" => ((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['javascript']) || 
					((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_deflate'] ||
						$this->options['htaccess']['mod_gzip']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['gzip']['javascript']),
				"unobtrusive_body" => $this->premium && $this->options['unobtrusive']['body'] &&
					!$this->options['unobtrusive']['all'],
				"external_scripts" => $this->options['external_scripts']['on'],
				"inline_scripts" => $this->options['external_scripts']['inline'] &&
					($this->options['minify']['javascript'] || $this->options['rocket']['reorder']),
				"inline_scripts_body" => $this->options['external_scripts']['inline_body'] &&
					($this->options['minify']['javascript'] || $this->options['rocket']['reorder']),
				"external_scripts_head_end" => $this->options['external_scripts']['head_end'],
				"external_scripts_exclude" => $this->options['external_scripts']['ignore_list'],
				"external_scripts_mask" => $this->premium > 1 ? $this->options['external_scripts']['include_mask'] : '',
				"remove_list" => $this->premium > 1 ? $this->options['external_scripts']['remove_list'] : '',
				"dont_check_file_mtime" => $this->options['performance']['mtime'],
				"file" => $this->premium > 1 ? $this->options['minify']['javascript_file'] : '',
				"host" => $this->premium ? $this->options['minify']['javascript_host'] : '',
				"https" => $this->premium > 1 ? $this->options['parallel']['https'] : '',
				"rocket" => $this->options['rocket']['javascript'] && !$this->options['minify']['javascript'],
				"rocket_external" => $this->options['rocket']['javascript_external'] && !$this->options['minify']['javascript'],
				"reorder" => $this->options['rocket']['reorder']
			),
			"css" => array(
				"cachedir" => $this->options['css_cachedir'],
				"cachedir_relative" => str_replace($this->options['document_root'], "/", $this->options['css_cachedir']),
				"installdir" => $webo_cachedir,
				"gzip" => $this->options['gzip']['css'] &&
					((!$this->options['htaccess']['mod_gzip'] &&
						!$this->options['htaccess']['mod_deflate'] &&
						(!$this->options['htaccess']['mod_rewrite'] ||
							!$this->options['htaccess']['mod_mime'] ||
							!$this->options['htaccess']['mod_expires'])) ||
					!$this->options['htaccess']['enabled']),
				"gzip_level" => round($this->options['gzip']['css_level']),
				"minify" => $this->options['minify']['css'],
				"minify_body" => $this->options['minify']['css_body'],
				"minify_with" => $this->premium > 1 && $this->options['minify']['css_min'] == 2 ?
					'tidy' :
					($this->premium > 1 && $this->options['minify']['css_min'] == 3 ? 'cssmin' :
					($this->options['minify']['css_min'] ? 'basic' : '')),
				"far_future_expires" => $this->options['far_future_expires']['css'] &&
					!$this->options['htaccess']['mod_expires'],
				"far_future_expires_php" => $this->options['far_future_expires']['css'],
				"far_future_expires_rewrite" => $this->options['htaccess']['mod_rewrite'] &&
					$this->options['htaccess']['enabled'] &&
					$this->options['far_future_expires']['css'],
				"far_future_expires_static" => ((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['css']) || 
					((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_deflate'] ||
						$this->options['htaccess']['mod_gzip']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['gzip']['css']),
				"data_uris" => $this->options['data_uris']['on'],
/* disable mhtml for IE7- under HTTPS */
				"data_uris_mhtml" => $this->options['data_uris']['mhtml'] && !$this->https,
				"data_uris_separate" => $this->premium > 1 && $this->options['data_uris']['separate'] &&
					((in_array($this->ua_mod, $this->ies) &&
							$this->options['data_uris']['mhtml']) ||
						(!in_array($this->ua_mod, $this->ies) &&
							$this->options['data_uris']['on'])),
				"data_uris_domloaded" => $this->options['unobtrusive']['background'] &&
					$this->premium > 1,
				"data_uris_size" => round($this->options['data_uris']['size']),
				"data_uris_mhtml_size" => round($this->options['data_uris']['mhtml_size']),
				"data_uris_exclude" => $this->options['data_uris']['ignore_list'],
				"data_uris_exclude_mhtml" => $this->options['data_uris']['additional_list'],
				"css_sprites" => $this->premium && $this->options['css_sprites']['enabled'],
				"css_sprites_expires_rewrite" => (!($this->options['htaccess']['mod_rewrite'] &&
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['images'],
				"css_sprites_ignore" => $this->options['css_sprites']['ignore'],
				"css_sprites_exclude" => $this->options['css_sprites']['ignore_list'],
				"truecolor_in_jpeg" => $this->premium > 1 && $this->options['css_sprites']['truecolor_in_jpeg'],
				"aggressive" => $this->premium > 1 && $this->options['css_sprites']['aggressive'],
				"no_ie6" => $this->premium > 1 && $this->options['css_sprites']['no_ie6'],
				"dimensions_limited" => $this->premium ? round($this->options['css_sprites']['dimensions_limited']) : 0,
				"css_sprites_extra_space" => $this->premium && $this->options['css_sprites']['extra_space'],
				"punypng" => $this->premium > 1 ? $this->options['punypng'] : '',
				"css_restore_properties" => $this->options['performance']['restore_properties'] &&
					$this->premium > 1,
				"unobtrusive_body" => false,
				"parallel" => $this->options['parallel']['enabled'],
				"parallel_hosts" => $this->options['parallel']['allowed_list'],
				"external_scripts" => $this->options['external_scripts']['css'],
				"inline_scripts" => $this->options['external_scripts']['css_inline'],
				"external_scripts_exclude" => $this->options['external_scripts']['additional_list'],
				"include_code" => $this->options['external_scripts']['include_code'],
				"remove_list" => $this->premium > 1 ? $this->options['external_scripts']['remove_list_css'] : '',
				"dont_check_file_mtime" => $this->options['performance']['mtime'],
				"file" => $this->premium > 1 ? $this->options['minify']['css_file'] : '',
				"host" => $this->premium ? $this->options['minify']['css_host'] : '',
				"https" => $this->premium > 1 ? $this->options['parallel']['https'] : '',
				"rocket" => $this->options['rocket']['css'] && !$this->options['minify']['css'],
				"reorder" => $this->options['rocket']['reorder']
			),
			"page" => array(
				"cachedir" => $this->options['html_cachedir'],
				"cache_engine" => $this->premium ? $this->options['performance']['cache_engine'] : 0,
				"cache_engine_options" => $this->premium ? $this->options['performance']['cache_engine_options'] : '',
				"cachedir_relative" => str_replace($this->options['document_root'], "/", $this->options['html_cachedir']),
				"installdir" => $webo_cachedir,
				"host" => $this->options['host'],
				"gzip" => $this->options['gzip']['page'] &&
					((!$this->options['htaccess']['mod_gzip'] &&
							!$this->options['htaccess']['mod_deflate']) ||
						!$this->options['htaccess']['enabled']),
				"zlib" => $this->options['gzip']['zlib'],
				"gzip_noie" => $this->options['gzip']['noie'] &&
					$this->premium > 1,
				"gzip_level" => round($this->options['gzip']['page_level']),
				"gzip_cookie" => $this->options['gzip']['cookie'] &&
					$this->premium > 1,
				"minify" => $this->options['minify']['page'],
				"minify_aggressive" => $this->options['minify']['html_one_string'] &&
					$this->premium,
				"remove_comments" => $this->options['minify']['html_comments'] &&
					$this->premium,
				"dont_check_file_mtime" => $this->options['performance']['mtime'],
				"cache_images" => $this->options['far_future_expires']['images'],
				"far_future_expires_rewrite" => (!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['images'],
				"far_future_expires_external" => $this->options['far_future_expires']['external'],
				"clientside_cache" => $this->premium > 1 && $this->options['far_future_expires']['html'],
				"clientside_timeout" => $this->options['far_future_expires']['html_timeout'],
				"cache" => $this->options['html_cache']['enabled'] &&
					$this->premium,
				"cache_timeout" => $this->options['html_cache']['timeout'],
				"cart_timeout" => $this->premium > 1 ? $this->options['html_cache']['timeout_cart'] : $this->options['html_cache']['timeout'],
				"ajax_timeout" => $this->premium > 1 ? $this->options['html_cache']['timeout_ajax'] : $this->options['html_cache']['timeout'],
				"flush" => $this->options['html_cache']['flush_only'] &&
					$this->premium > 1,
				"flush_size" => $this->options['html_cache']['flush_size'],
				"cache_ignore" => $this->premium ? $this->options['html_cache']['ignore_list'] : '',
				"ignore_include" => $this->premium ? $this->options['html_cache']['ignore'] : '',
				"cache_params" => $this->premium > 1 ? $this->options['html_cache']['params'] : '',
				"allowed_user_agents" => $this->premium > 1 ? $this->options['html_cache']['allowed_list'] : '',
				"exclude_cookies" => $this->premium > 1 ? $this->options['html_cache']['additional_list'] : '',
				"parallel" => $this->options['parallel']['enabled'] && !empty($this->options['parallel']['allowed_list']),
				"parallel_regexp" => $this->premium > 1 ? $this->options['parallel']['regexp'] : '',
				"parallel_hosts" => $this->options['parallel']['allowed_list'],
				"parallel_satellites" => $this->options['parallel']['additional'],
				"parallel_satellites_hosts" => $this->options['parallel']['additional_list'],
				"parallel_ignore" => $this->options['parallel']['ignore_list'],
				"parallel_css" => $this->options['parallel']['css'] && !empty($this->options['parallel']['allowed_list']),
				"parallel_javascript" => $this->options['parallel']['javascript'] && !empty($this->options['parallel']['allowed_list']),
				"parallel_ftp" => $this->premium ? $this->options['parallel']['ftp'] : '',
				"parallel_https" => $this->premium > 1 ? $this->options['parallel']['https'] : '',
				"unobtrusive_informers" => $this->options['unobtrusive']['informers'] &&
					($this->premium > 1),
				"unobtrusive_counters" => $this->options['unobtrusive']['counters'] &&
					($this->premium > 1),
				"unobtrusive_ads" => $this->options['unobtrusive']['ads'] &&
					($this->premium > 1),
				"unobtrusive_all" => $this->options['unobtrusive']['all'] &&
					$this->premium,
				"unobtrusive_iframes" => $this->options['unobtrusive']['iframes'] &&
					($this->premium > 1),
				"unobtrusive_onload" => $this->options['unobtrusive']['on'] &&
					($this->premium > 1),
				"unobtrusive_inline" => $this->options['unobtrusive']['on'] == 2 &&
					($this->premium > 1),
				"unobtrusive_configuration" => $this->premium > 1 ? explode(" ", $this->options['unobtrusive']['configuration']) : array(),
				"postload" => $this->premium > 1 ? $this->options['unobtrusive']['postload'] : '',
				"postload_frames" => $this->premium > 1 ? $this->options['unobtrusive']['frames'] : '',
				"footer" => $this->options['footer']['text'],
				"footer_image" => $this->options['footer']['image'],
				"footer_text" => $this->options['footer']['link'],
				"footer_style" => $this->options['footer']['css_code'],
				"spot" => $this->premium ? $this->options['footer']['spot'] : 1,
				"counter" => $this->premium > 1 ? $this->options['footer']['counter'] : '',
				"ab" => $this->options['footer']['ab'] &&
					$this->premium > 1,
				"htaccess_username" => $this->premium > 1 ? $this->options['external_scripts']['user'] : '',
				"htaccess_password" => $this->premium > 1 ? $this->options['external_scripts']['pass'] : '',
				"html_tidy" => $this->options['performance']['plain_string'] &&
					$this->premium,
				"sprites" => $this->premium && $this->options['css_sprites']['html_sprites'],
				"sprites_domloaded" => $this->options['unobtrusive']['background'] &&
					$this->premium > 1,
				"dimensions_limited" => $this->premium ? round($this->options['css_sprites']['html_limit']) : 0,
				"per_page" => $this->premium && $this->options['css_sprites']['html_page'],
				"https_separate" => $this->premium > 1 ? $this->options['performance']['https'] : 0,
				"scale_images" => $this->premium > 1 ? $this->options['performance']['scale'] : 0,
				"scale_restriction" => $this->premium > 1 ? $this->options['performance']['scale_restriction'] : 0,
			),
			"document_root" => $this->options['document_root'],
			"document_root_relative" => str_replace("//", "/", str_replace($this->options['document_root'], "/", $this->options['website_root'])),
			"website_root" => $this->options['website_root'],
			"cache_version" => round($this->options['performance']['cache_version']) &&
				$this->premium > 1,
			"uniform_cache" => $this->options['performance']['uniform_cache'] &&
				$this->premium > 1,
			"plugins" => !empty($this->options['plugins']) &&
				$this->premium > 1 ? explode(" ", $this->options['plugins']) : '',
			"days_to_delete" => $this->premium > 1 ? round($this->options['performance']['delete_old']) : 0,
			"charset" => $this->options['charset'],
			"currency" => $this->premium > 1 ? $this->options['currency'] : '',
			'host' => $this->options['host'],
			"clean_html_cache" => $this->options['html_cache']['cleanup'] &&
				$this->premium > 1 ? $this->options['html_cache']['timeout'] : 0
		);
		$this->lc = $this->options['license'];
/* overwrite other options array that we passed in */
		$this->options = $full_options;
/* some additional checks */
		if ($this->options['page']['parallel_css'] && empty($this->options['css']['host'])) {
			if ($this->options['page']['parallel_hosts']) {
				$hosts = explode(" ", $this->options['page']['parallel_hosts']);
				$this->options['css']['host'] = $hosts[0];
			} else {
				$this->options['page']['parallel_css'] = 0;
			}
		}
		if ($this->options['page']['parallel_javascript'] && empty($this->options['javascript']['host'])) {
			if ($this->options['page']['parallel_hosts']) {
				$hosts = explode(" ", $this->options['page']['parallel_hosts']);
				$this->options['javascript']['host'] = $hosts[0];
			} else {
				$this->options['page']['parallel_javascript'] = 0;
			}
		}
	}

	/**
	* Start saving the output buffer
	*
	**/
	function start () {
		ob_start();
		ob_start();
		ob_implicit_flush(0);
	}

	/**
	* Compress passes content directly
	*
	**/
	function compress ($content) {
		$this->finish($content);
	}

	/**
	* Do work and return output buffer
	*
	**/
	function finish ($content = false) {
/* disable any actions if not active */
		if (empty($this->options['active'])) {
			return $content;
		}
		@ini_set("max_execution_time", 600);
		if ($content === false) {
			$this->content = @ob_get_clean();
/* clear all other buffers */
			while (@ob_end_clean());
		} else {
			$this->content = $content;
		}
/* execute plugin-specific logic, BeforeOptimization event */
		if (is_array($this->options['plugins'])) {
			foreach ($this->options['plugins'] as $plugin) {
				$plugin_file =
					$this->options['css']['installdir'] .
						'plugins/' . $plugin . '.php';
				if (@is_file($plugin_file)) {
					include_once($plugin_file);
					$web_optimizer_plugin = new $plugin;
					$this->content =
						$web_optimizer_plugin->onBeforeOptimization($this->content);
				}
			}
		}
		$skip = 0;
		$ajax = 0;
		if (function_exists('headers_list')) {
			$headers = headers_list();
/* define if Content-Type is text/html and allow it */
			foreach ($headers as $head) {
				$header = strtolower($head);
				if (strpos($header, 'content-type:') !== false || (strpos($header, 'location:') !== false && strpos($header, '-location:') === false)) {
					$skip++;
				}
				if (strpos($header, 'text/html') || strpos($header, 'application/xhtml+xml')) {
					$skip--;
				}
				if (strpos($header, 'application/json')) {
					$skip++;
					$ajax = 1;
				}
				if (strpos($header, 'content-base') !== false) {
					$this->basehref = substr($head, 14);
				}
				if ($this->ua_mod && strpos($header, 'x-ua-compatible') !== false) {
					$this->ua_mod = '.ie' . substr($head, 20);
				}
			}
		}
/* also skip AJAX requests with X-Requested-With: XMLHttpRequest */
		if (!$skip &&
			!empty($_SERVER['HTTP_X_REQUESTED_WITH']) &&
			$_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest') {
				$skip = 1;
				$ajax = 1;
		}
/* also skip some CMS-related parameters */
		if (!$skip && !empty($_GET['no_html'])) {
			$skip = 1;
			$ajax = 1;
		}
/* skip some extensions */
		if (!$skip && !empty($_SERVER['QUERY_STRING'])) {
			$query = explode('.', $_SERVER['QUERY_STRING']);
			$ext = strtolower($query[count($query) - 1]);
			if (in_array($ext, array('pdf', 'doc', 'xls', 'docx', 'xlsx'))) {
				$skip = 1;
			}
		}
/* skip some known cases of non-HTML content */
		if (!$skip) {
/* reduce amount of viewing content, accelerate 'fast check' by 1% */
			$spot = substr($this->content, 0, 200);
			if (strpos($spot, '<methodResponse') !== false ||
				strpos($spot, '<rss') !== false ||
				strpos($spot, '<feed') !== false ||
				strpos($spot, '<urlset') !== false ||
				strpos($spot, '<smf') !== false ||
				strlen($spot) < 200) {
					$skip = 1;
/* mark AJAX requests */
			} elseif (strpos($spot, '{') === 0 || !preg_match("!<h(tml|ead)!is", $spot)) {
				$skip = 1;
				$ajax = 1;
			}
		}
/* enable A/B testing */
		if (!$skip && !empty($this->options['page']['ab']) && !empty($_COOKIE['WSS_DISABLED'])) {
			$this->content = preg_replace("!(<head[^>]*>)!i", "$1" . '<script type="text/javascript">//<![CDATA[' .
				"\n" . 'var _gaq=_gaq||[];_gaq.push(["_setCustomVar",1,"WEBOSiteSpeedUp","0"])' . "\n//]]></script>", $this->content);
			$skip = 1;
		}
/* skip RSS, SMF xml format */
		if (!$skip) {
/* define gzip headers at the end */
			$this->set_gzip_header();
/* Add UA-Compatible support */
			if ($this->ua_mod && strpos($this->content, 'X-UA-Compatible') && !strpos($this->content, 'IE=edge')) {
				$this->ua_mod = '.ie' . preg_replace("!.*<meta[^>]+content=['\"]?IE=([0-9]+).*!is", "$1", $this->content);
			}
/* create DOMready chunk of JavaScript code, is required for different tasks */
			$this->domready_include = $this->domready_include2 = $this->domready_include3 = '';
			if ($this->options['css']['data_uris_separate'] || $this->options['page']['sprites_domloaded'] || $this->joomla_cache || $this->wp_cache || $this->generic_cache) {
				$this->domready_include = '__WSSLOADED=0;function _weboptimizer_load(){if(__WSSLOADED){return}';
				if ($this->options['page']['sprites_domloaded']) {
					$this->domready_include .= '_webo_hsprites();';
				}
				$cart_class = $this->generic_cache ? 'wss_cart' : ($this->joomla_cache ? 'vmCartModule' : 'widget_wp_digi_cart');
				if ($this->options['page']['cache'] && $this->cache_me) {
					$this->domready_include .= 'var g,x=document,f,h,j;if(typeof x.getElementsByClassName!="undefined"){g=x.getElementsByClassName("' . 
					$cart_class .
					'")[0];f=x.getElementsByClassName("wss_cart_qty")[0];h=x.getElementsByClassName("wss_cart2")[0];j=x.getElementsByClassName("wss_cart2_qty")[0]}else{var b=x.getElementsByTagName("*"),c,d=0;while(c=b[d++]){if(c.className){if(/(^|\s)' .
					$cart_class .
					'(\s|$)/.test(c.className)){g=c}if(/(^|\s)wss_cart_qty(\s|$)/.test(c.className)){f=c}if(/(^|\s)wss_cart2(\s|$)/.test(c.className)){h=c}if(/(^|\s)wss_cart2_qty(\s|$)/.test(c.className)){j=c}}}}if(g&&!(f&&(parseInt(f.innerHTML)))&&!(j&&(parseInt(j.innerHTML)))){var a,a1;if(typeof window.localStorage!="undefined"){a=window.localStorage.wss_cart||"";a1=window.localStorage.wss_cart2||"";if(x.cookie.indexOf("WSS_CART=0")!==-1){delete window.localStorage["wss_cart"];delete window.localStorage["wss_cart2"]}}else{var b=x.cookie.split(";"),c,d=0,e;while(c=b[d++]){e=c.indexOf("wss_cart=");if(!e||e==1){a=c.substr(e+11).replace(/@#/g,";")}e=c.indexOf("wss_cart2=");if(!e||e==1){a1=c.substr(e+11).replace(/@#/g,";")}}}if(x.cookie.indexOf("WSS_CART=1")!==-1'.
					($this->wp_cache ? '&&x.location.pathname!="/cart/"' : '') .
					'){if(a&&a!="undefined"){WSS_CART=g.innerHTML=a}if(a1&&a1!="undefined"){WSS_CART2=h.innerHTML=a1}}}';
				}
				$this->domready_include .= '__WSSLOADED=1}(function(){var d=document;if(d.addEventListener){d.addEventListener("DOMContentLoaded",_weboptimizer_load,false)}';
				if (!empty($this->ua_mod) && substr($this->ua_mod, 3, 1) < 8) {
					$this->domready_include .= 'd.write("\x3cscript id=\"_weboptimizer\" defer=\"defer\" src=\"\">\x3c\/script>");(d.getElementById("_weboptimizer")).onreadystatechange=function(){if(this.readyState=="complete"){setTimeout(function(){if(typeof _weboptimizer_load!=="undefined"){_weboptimizer_load()}},0)}};';
				} else {
					$this->domready_include .= 'if(/WebK/i.test(navigator.userAgent)){var wssload=setInterval(function(){if(/loaded|complete/.test(document.readyState)){clearInterval(wssload);if(typeof _weboptimizer_load!=="undefined"){_weboptimizer_load()}}},10)}';
				}
				$this->domready_include .= 'window[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"load",_weboptimizer_load,false)}());';
				if ($this->options['page']['cache']) {
/* clean-up all localStorage values */
					if ($this->logged) {
						$this->domready_include2 .= 'if(typeof window.localStorage!="undefined"){window.localStorage.wss_cart="";window.localStorage.wss_cart2=""}else{document.cookie="wss_cart=;path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString());document.cookie="wss_cart2=;path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())}';
/* store user-specific values into localStorage */
					} else {
						$this->domready_include2 .= '(function(){var a=window;if(a.parent===a)a[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"unload",function(){var a,x=document,y,z,r;if(typeof x.getElementsByClassName!="undefined"){a=x.getElementsByClassName("' .
						$cart_class .
						'")[0]||0;y=x.getElementsByClassName("wss_cart_qty")[0]||0;z=x.getElementsByClassName("wss_cart2")[0]||0;r=x.getElementsByClassName("wss_cart2_qty")[0]||0}else{var b=x.getElementsByTagName("*"),c,d=0;while(c=b[d++]){if(c.className){if(/(^|\s)' .
						$cart_class .
					'(\s|$)/.test(c.className)){a=c}if(/(^|\s)wss_cart_qty(\s|$)/.test(c.className)){y=c}if(/(^|\s)wss_cart2(\s|$)/.test(c.className)){z=c}if(/(^|\s)wss_cart2_qty(\s|$)/.test(c.className)){r=c}}}}y=y||a.getElementsByTagName("b")[0];if(a||z){if(a){a=a.innerHTML.replace(/[\r\n]/g," ").replace(/\s+/g," ").replace(/;">/g,"\">").replace(/&amp;/,"&")}if(z){z=z.innerHTML.replace(/[\r\n]/g," ").replace(/\s+/g," ").replace(/;">/g,"\">").replace(/&amp;/,"&")}if(typeof window.localStorage!="undefined"){window.localStorage.wss_cart=a;window.localStorage.wss_cart2=z}else{document.cookie="wss_cart="+a.replace(/;/g,"@#")+";path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString());document.cookie="wss_cart2="+z.replace(/;/g,"@#")+";path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())}document.cookie="WSS_CART="+(((a&&y&&parseInt(y.innerHTML))||(z&&r&&parseInt(r.innerHTML)))?1:0)+";path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())}},false)})();';
						$this->domready_include3 = '(function(){var a=window;if(a.parent===a)a[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"unload",function(){var a,x=document,y,z,r;document.cookie="WSS_CART=0;path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())},false)})();';
					}
				}
			}
/* find all files in head to process */
			$this->get_script_array();
/* Run the functions specified in options */
			if (is_array($this->options)) {
				foreach ($this->options as $func => $option) {
					if (method_exists($this, $func)) {
						if (!empty($option['gzip']) ||
							!empty($option['minify']) ||
							!empty($option['far_future_expires']) ||
							!empty($option['parallel']) ||
							!empty($option['unobtrusive_onload']) ||
							!empty($option['unobtrusive_all']) ||
							!empty($option['unobtrusive_ads']) ||
							!empty($option['unobtrusive_counters']) ||
							!empty($option['unobtrusive_informers']) ||
							!empty($option['unobtrusive_iframes']) ||
							!empty($option['postload']) ||
							!empty($option['postload_frames']) ||
							!empty($option['cache']) ||
							!empty($option['sprites']) ||
							!empty($option['counter']) ||
							!empty($option['scale_images']) ||
							!empty($option['ab']) ||
							!empty($this->domready_include)) {
								if (!empty($this->web_optimizer_stage)) {
									$this->write_progress($this->web_optimizer_stage++);
								}
								$this->$func($option, $func);
						}
					}
					if ($func == 'page') {
						$this->clear_trash();
					}
				}
			}
			if (!empty($this->web_optimizer_stage)) {
				$this->write_progress($this->web_optimizer_stage);
/* redirect to installation page if chained optimization if finished */
				if ($this->web_optimizer_stage > 85) {
					$this->write_progress(97);
					@header('Location: http://' .
						$this->host .
						str_replace($this->options['document_root'], '/', realpath(dirname(__FILE__) . '/../')) .
						'/index.php?page=install_stage_3&Submit=1&web_optimizer_stage=97&wss__password=' .
						$this->password);
/* else redirect to the next stage */
				} else {
					@header('Location: ' . $this->chained_redirect . '?web_optimizer_stage=' . 
						$this->web_optimizer_stage .
						'&password=' .
						$this->password .
						'&web_optimizer_debug=1');
				}
				$this->di();
			}
		}
		if ($ajax && $this->options['page']['ajax_timeout']) {
			$this->options['page']['cache_timeout'] = $this->options['page']['ajax_timeout'];
			$this->cache_generic(1);
		}
/* Return content to requestor */
		if ($content) {
			return $this->content;
/* or echo content to the browser */
		} else {
/* HTTP/1.0 needs Content-Length */
			if (($this->encoding || empty($this->gzip_set)) && (empty($_SERVER['SERVER_PROTOCOL']) || $_SERVER['SERVER_PROTOCOL'] == 'HTTP/1.0')) {
				@header('Content-Length: ' . strlen($this->content));
			}
			echo $this->content;
/* It's obvious to send anything right after gzipped content */
			if (!empty($this->encoding)) {
				$this->di();
			}
		}
	}

	/**
	* GZIP and minify the javascript as required
	*
	**/
	function javascript ($options,$type) {
/* prepare list of files to process */
		$script_files = array();
		foreach ($this->initial_files as $file) {
			if (!empty($file['tag']) && $file['tag'] == 'script') {
				$script_files[] = $file;
			}
		}
		if (!empty($options['minify']) && !empty($script_files)) {
			$this->content = $this->do_compress(
				array(
					'cachedir' => $options['cachedir'],
					'cachedir_relative' => $options['cachedir_relative'],
					'installdir' => $options['installdir'],
					'host' => $options['host'],
					'tag' => 'script',
					'type' => 'text/javascript',
					'ext' => 'js',
					'src' => 'src',
					'self_close' => 0,
					'gzip' => $options['gzip'],
					'gzip_level' => $options['gzip_level'],
					'minify' => $options['minify'],
					'minify_body' => $options['minify_body'],
					'minify_with' => $options['minify_with'],
					'minify_try' => $options['minify_try'],
					'minify_exclude' => $options['minify_exclude'],
					'remove_duplicates' => $options['remove_duplicates'],
					'far_future_expires' => $options['far_future_expires'],
					'far_future_expires_php' => $options['far_future_expires_php'],
					'far_future_expires_rewrite' => $options['far_future_expires_rewrite'],
					'header' => $type,
					'css_sprites' => 0,
					'css_sprites_exclude' => 0,
					'parallel' => 0,
					'aggressive' => 0,
					'no_ie6' => 0,
					'dimensions_limited' => 0,
					'css_sprites_extra_space' => 0,
					'data_uris' => 0,
					'mhtml' => 0,
					'unobtrusive_body' => $options['unobtrusive_body'],
					'external_scripts' => $options['external_scripts'],
					'inline_scripts' => $options['inline_scripts'],
					'inline_scripts_body' => $options['inline_scripts_body'],
					'external_scripts_head_end' => $options['external_scripts_head_end'],
					'external_scripts_exclude' => $options['external_scripts_exclude'],
					'remove_list' => $options['remove_list'],
					'dont_check_file_mtime' => $options['dont_check_file_mtime'],
					'file' => $options['file'],
					'https' => $options['https'],
					'rocket' => $options['rocket'],
					'rocket_external' => $options['rocket_external'],
					'reorder' => $options['reorder']
				),
				$this->content,
				$script_files
			);
		}
	}

	/**
	* GZIP and minify the CSS as required
	*
	**/
	function css ($options, $type) {
/* prepare list of files to process */
		$link_files = array();
		foreach ($this->initial_files as $file) {
			if (!empty($file['tag']) && $file['tag'] == 'link') {
				$link_files[] = $file;
			}
		}
		if (!empty($options['minify']) && !empty($link_files)) {
/* Compress separately for each media type*/
			$this->content = $this->do_compress(
				array(
					'cachedir' => $options['cachedir'],
					'cachedir_relative' => $options['cachedir_relative'],
					'installdir' => $options['installdir'],
					'host' => $options['host'],
					'tag' => 'link',
					'type' => 'text/css',
					'ext' => 'css',
					'src' => 'href',
					'rel' => 'stylesheet',
					'data_uris' => $options['data_uris'],
					'mhtml' => $options['data_uris_mhtml'],
					'data_uris_separate' => $options['data_uris_separate'],
					'data_uris_domloaded' => $options['data_uris_domloaded'],
					'data_uris_size' => $options['data_uris_size'],
					'data_uris_exclude' => $options['data_uris_exclude'],
					'mhtml' => $options['data_uris_mhtml'],
					'mhtml_size' => $options['data_uris_mhtml_size'],
					'mhtml_exclude' => $options['data_uris_exclude_mhtml'],
					'css_sprites' => $options['css_sprites'],
					'css_sprites_ignore' => $options['css_sprites_ignore'],
					'css_sprites_exclude' => $options['css_sprites_exclude'],
					'truecolor_in_jpeg' => $options['truecolor_in_jpeg'],
					'aggressive' => $options['aggressive'],
					'no_ie6' => $options['no_ie6'],
					'dimensions_limited' => $options['dimensions_limited'],
					'css_sprites_extra_space' => $options['css_sprites_extra_space'],
					'css_sprites_expires_rewrite' => $options['css_sprites_expires_rewrite'],
					'punypng' => $options['punypng'],
					'css_restore_properties' => $options['css_restore_properties'],
					'self_close' => 1,
					'gzip' => $options['gzip'],
					'gzip_level' => $options['gzip_level'],
					'minify' => $options['minify'],
					'minify_body' => $options['minify_body'],
					'minify_with' => $options['minify_with'],
					'far_future_expires' => $options['far_future_expires'],
					'far_future_expires_php' => $options['far_future_expires_php'],
					'far_future_expires_rewrite' => $options['far_future_expires_rewrite'],
					'header' => $type,
					'unobtrusive_body' => $options['unobtrusive_body'],
					'parallel' => $options['parallel'],
					'parallel_hosts' => $options['parallel_hosts'],
					'external_scripts' => $options['external_scripts'],
					'inline_scripts' => $options['inline_scripts'],
					'external_scripts_exclude' => $options['external_scripts_exclude'],
					'include_code' => $options['include_code'],
					'remove_list' => $options['remove_list'],
					'dont_check_file_mtime' => $options['dont_check_file_mtime'],
					'file' => $options['file'],
					'https' => $options['https'],
					'rocket' => $options['rocket'],
					'rocket_external' => $options['rocket'],
					'reorder' => $options['reorder']
				),
				$this->content,
				$link_files
			);
		}
	}

	/**
	* GZIP and minify the page itself as required
	*
	**/
	function page ($options, $type) {
		if (empty($this->web_optimizer_stage) && $options['clientside_cache'] && empty($this->flushed)) {
/* not really GMT but is valid locally */
			$ExpStr = date("D, d M Y H:i:s",
				$this->time + $this->options['page']['clientside_timeout']) . " GMT";
			@header("Cache-Control: private, max-age=" .
				$this->options['page']['clientside_timeout']);
			@header("Expires: " . $ExpStr);
		}
/* move informers, counters, ads, and iframes before </body> */
		$this->replace_informers($options);
/* Minify page itself or parse multiple hosts */
		if (!empty($options['minify']) ||
			(!empty($options['parallel']) &&
				!empty($options['parallel_hosts'])) ||
			!empty($options['unobtrusive_all']) ||
			!empty($this->options['page']['far_future_expires_rewrite']) ||
			!empty($this->options['page']['far_future_expires_external']) ||
			!empty($this->options['page']['sprites']) ||
			!empty($this->options['page']['scale_images'])) {
				$this->content = $this->trimwhitespace($this->content);
		}
		if (!empty($this->options['page']['counter']) || !empty($this->options['page']['sprites_domloaded']) || !empty($this->options['page']['ab']) || !empty($this->options['page']['parallel'])) {
			$stamp = '';
			if (!empty($this->options['page']['counter']) || !empty($this->options['page']['sprites_domloaded']) || !empty($this->options['page']['ab'])) {
				$stamp .= '<script type="text/javascript">//<![CDATA[' . "\n";
				if (!empty($this->options['page']['counter'])) {
					$stamp .= '__WSS=(new Date()).getTime();';
				}
				if (!empty($this->options['page']['sprites_domloaded'])) {
					$stamp .= 'var _webo_hsprites=function(){};';
				}
				if (!empty($this->options['page']['ab'])) {
					$stamp .= 'var _gaq=_gaq||[];_gaq.push(["_setCustomVar",1,"WEBOSiteSpeedUp","1"]);';
				}
				$stamp .= "\n//]]></script>";
			}
			if (!empty($this->options['page']['parallel_hosts'])) {
				$stamp .= '<meta http-equiv="x-dns-prefetch-control" content="on"' .
					($this->xhtml ? '/' : '') .
					'>';
				$hosts = explode(" ", $this->options['page']['parallel_hosts']);
				$hosts_to_cache = array();
				foreach ($hosts as $host) {
					$s = $host . ((strpos($host, '.') === false) ? '.' . $this->host : '');
					$stamp .= '<link rel="dns-prefetch" href="http' .
						($this->https ? 's' : '') .
						'://' .
						$s .
						'"' .
						($this->xhtml ? '/' : '') .
						'>';
					$hosts_to_cache[] = '//' . $s;
				}
				$stamp .= '<script type="text/javascript">//<![CDATA[' . "\n" . 'new Image().src="' .
					implode($this->options['page']['cachedir_relative'] . '0.gif";new Image().src="', $hosts_to_cache) .
					$this->options['page']['cachedir_relative'] . '0.gif"' . "\n//]]></script>";
			}
			if ($this->options['page']['html_tidy'] &&
				($headpos = strpos($this->content, '<head'))) {
					$headend = strpos($this->content, '>', $headpos);
					$this->content = substr_replace($this->content,
						$stamp, $headend + 1, 0);
			} elseif ($this->options['page']['html_tidy'] &&
				($headpos = strpos($this->content, '<HEAD'))) {
					$headend = strpos($this->content, '>', $headpos);
					$this->content = substr_replace($this->content,
						$stamp, $headend + 1, 0);
			} else {
				$this->content = preg_replace("@<head[^>]*>@is",
					"$0" . $stamp, $this->content);
			}
		}
/* execute plugin-specific logic, AfterOptimization event */
		if (is_array($this->options['plugins'])) {
			foreach ($this->options['plugins'] as $plugin) {
				$plugin_file =
					$this->options['css']['installdir'] .
						'plugins/' . $plugin . '.php';
				if (@is_file($plugin_file)) {
					include_once($plugin_file);
					$web_optimizer_plugin = new $plugin;
					$this->content =
						$web_optimizer_plugin->onAfterOptimization($this->content);
				}
			}
		}
		if (!empty($this->web_optimizer_stage)) {
			$this->write_progress($this->web_optimizer_stage++);
		}
		$this->clear_trash();
		$this->cache_generic();
/* strip from content flushed part */
		if (!empty($this->flushed)) {
			if (empty($options['flush_size'])) {
				$options['flush_size'] = strlen($content_to_write);
			}
			$this->content = substr($this->content, $options['flush_size']);
		}
/* Gzip page itself */
		if(!empty($options['gzip']) && !empty($this->encoding)) {
			$content = $this->create_gz_compress($this->content,
				in_array($this->encoding, array('gzip', 'x-gzip')));
			if (!empty($content)) {
				$this->content = $content;
			}
		}
	}

	/**
	* Generic cache function
	* 
	**/	
	function cache_generic ($ajax = false) {
		$chunk = '';
/* on-fly caching cart */
		if ((!empty($this->cache_me) || defined('WP_CACHE')) && !$ajax) {
/* add client side replacement for WordPress comment fields */
			if (defined('WP_CACHE')) {
				foreach ($_COOKIE as $key => $value) {
					if (strpos($key, 'comment_author') === 0) {
						$this->content = str_replace('value="'. urldecode($value) .'"', 'value=""', $this->content);
					}
				}
				$chunk = '(function(){' .
					(@is_dir($this->options['website_root'] . 'wp-content/plugins/wp-e-commerce/') ? 'jQuery.post("index.php?ajax=true","wpsc_ajax_action=get_cart",function(returned_data){eval(returned_data)});' : '') .
					'var a=document.cookie.split(";"),b,c=0,d,e;while(b=a[c++]){if(b.indexOf("comment_author_")!=-1){d=b.split("=");e=document.getElementById(d[0].replace(/(_?[a-f0-9]{32,}|\s?comment_author_)/g,"")||"author");if(e){e.value=unescape(d[1].replace(/\+/g," "))}}}}());';
			}
/* Add on-fly caching for Cart in Joomla! and WP, and others */
			if ($this->options['page']['cache'] && !$this->options['css']['data_uris_separate'] && !$this->options['page']['sprites_domloaded']) {
				$chunk .= $this->domready_include . $this->domready_include2;
			}
/* Add client-side cache flush on pages excluded from caching */
		} elseif ($this->options['page']['cache'] && !$this->options['css']['data_uris_separate'] && !$this->options['page']['sprites_domloaded'] && !$ajax) {
/* need to refresh localStorage Cache */
			if (@class_exists('JFactory') && ($user = &JFactory::getUser()) && ($user->get('aid') || $user->get('id'))) {
				$chunk = $this->domready_include3;
			} else {
				$chunk = $this->domready_include2;
			}
		}
		if ($chunk) {
			$chunk = ($this->premium > 1 ? '<!--noindex-->' : '').
				"<script type='text/javascript'>//<![CDATA[\n" . $chunk . "\n//]]></script>" .
				($this->premium > 1 ? '<!--/noindex-->' : '');
			if (preg_match("!</body>!i", $this->content)) {
				$this->content = preg_replace("!(</body>)!is", $chunk . "$1", $this->content);
			} else {
				$this->content .= $chunk;
			}
		}
/* check if we need to store cached page */
		if (!empty($this->cache_me) && empty($_COOKIE['WSS_CART'])) {
/* prepare flushed part of content */
			if (!empty($this->options['page']['flush']) && empty($this->encoding)) {
				if (empty($this->options['page']['flush_size'])) {
					if ($this->options['page']['html_tidy'] && ($headpos = strpos($source, '</head>'))) {
						$content_to_write = substr($this->content, 0, $headpos + 7);
					} elseif ($this->options['page']['html_tidy'] && ($headpos = strpos($source, '</HEAD>'))) {
						$content_to_write = substr($this->content, 0, $headpos + 7);
					} else {
						$content_to_write = preg_replace("!(.*<\/head>).*!is", "$1", $this->content);
					}
				} else {
					$content_to_write =
						substr($this->content, 0, $this->options['page']['flush_size']);
				}
			}
			$ordinary_cache_key = $this->view->ensure_trailing_slash($this->uri) .
				'index' .
				$this->ua_mod .
				'.html' .
				($this->options['page']['https_separate'] ? $this->https : '');
			$cache_key = $ordinary_cache_key .
				(empty($this->encoding_ext) ? '' : $this->encoding_ext) .
				($ajax ? '.ajax' : '');
			$ordinary_cache_key .= ($ajax ? '.ajax' : '');
			$timestamp = $this->cache_engine->get_mtime($cache_key);
			$content = $this->cache_engine->get_entry($cache_key);
/* set ETag, thx to merzmarkus */
			if (empty($this->options['page']['flush'])) {
				@header("ETag: \"" .
					crc32($this->content) .
					(empty($this->encoding) && empty($this->gzip_set) ? '' : '-' .
						(empty($this->gzip_set) ? str_replace("x-", "", $this->encoding) : 'gzip')) .
					"\"");
			}
			if (empty($timestamp) || empty($content) || $this->time - $timestamp > $this->options['page']['cache_timeout']) {
				$c = $this->content;
				$jutility = class_exists('JUtility', false);
				$jsession = class_exists('JSession', false);
				if ($jutility) {
					$token = JUtility::getToken();
				}
				elseif ($jsession) {
					$token = JSession::getFormToken();
				}
				if (!empty($token)) {
					$c = str_replace('##WSS_JTOKEN_WSS##', $token, $c);
				}
				if (!empty($this->options['page']['gzip']) && !empty($this->encoding) && !$jutility && !$jsession) {
					$content_to_write = $this->create_gz_compress($c,
						in_array($this->encoding, array('gzip', 'x-gzip')));
/* or just write full or non-gzipped content */
				} elseif ((empty($this->options['page']['flush']) || !empty($this->encoding)) && !$jutility && !$jsession) {
					$content_to_write = $c;
				}
/* don't create empty files */
				if (!empty($content_to_write)) {
					$this->cache_engine->put_entry($cache_key, $content_to_write, $this->time);
				}
/* create uncompressed file for plugins */
				if ($cache_key != $ordinary_cache_key || empty($content_to_write)) {
					$this->cache_engine->put_entry($ordinary_cache_key, $c, $this->time);
				}
/* clean expired entries */
				if ($this->options['clean_html_cache']) {
					$this->cache_engine->delete_entries_by_time($this->time, $this->options['page']['cache_timeout']);
				}
			}
		}
/* execute plugin-specific logic, Cache event */
		if (is_array($this->options['plugins'])) {
			foreach ($this->options['plugins'] as $plugin) {
				$plugin_file =
					$this->options['css']['installdir'] .
						'plugins/' . $plugin . '.php';
				if (@is_file($plugin_file)) {
					include_once($plugin_file);
					$web_optimizer_plugin = new $plugin;
					$this->content =
						$web_optimizer_plugin->onCache($this->content);
				}
			}
		}
	}

	/**
	* Write array to content
	* 
	**/
	function write_file_array ($file, $arr, $name) {
		$str = "<?php\n";
		$mq = get_magic_quotes_runtime();
		foreach ($arr as $key => $value) {
			$str .= '$' . $name . "['" . $key . "']='" . ($mq ? $value : str_replace(array("\\", "'"), array("\\\\", "\\'"), $value)) . "';\n";
		}
		$str .= "?>";
		return $this->write_file($file, $str);
	}

	/**
	* Write content to file
	* 
	**/
	function write_file ($file, $content, $upload = 0, $mime = '', $recursion = 0) {
		if (@function_exists('file_put_contents')) {
			@file_put_contents($file . '.tmp', $content, LOCK_EX);
			@rename($file . '.tmp', $file);
		} else {
			$fp = @fopen($file, "a+");
			if ($fp) {
/* block file from writing */
				@flock($fp, LOCK_EX);
/* erase content and move to the beginning */
				@ftruncate($fp, 0);
				@fseek($fp, 0);
				@fwrite($fp, $content);
				@fclose($fp);
			}
		}
		if (!@is_file($file) && $recursion < 3) {
			$this->write_file($file, $content, $upload, $mime, $recursion+1);
			return;
		}
		@touch($file, $this->time);
		@chmod($file, octdec("0644"));
		if ($upload && !empty($this->options['page']['parallel_ftp'])) {
			$this->view->upload_cdn($file,
				$this->options['document_root'],
				$this->options['page']['parallel_ftp'],
				$mime,
				$this->options['page']['host']);
		}
	}

	/**
	* Adds multiple hosts to HTML for images
	*
	**/
	function add_multiple_hosts ($content, $hosts, $satellites, $satellites_hosts) {
/* limit by 4 */
		if (count($hosts) > 4) {
			$hosts = array($hosts[0], $hosts[1], $hosts[2], $hosts[3]);
		}
		if (count($satellites_hosts) > 4) {
			$satellites_hosts = array($satellites_hosts[0], $satellites_hosts[1], $satellites_hosts[2], $satellites_hosts[3]);
		}
		$count = count($hosts);
		$count_satellites = count($satellites_hosts);
		$replaced = array();
		$IMG = strpos($content, '<IMG');
		if ($this->options['page']['html_tidy'] && !$IMG && !$this->options['page']['parallel_regexp']) {
			$_content = $content;
			$pos = $pos1 = false;
			while (($pos = strpos($_content, '<img')) !== false || ($pos1 = strpos($_content, '<input')) !== false) {
				$pos = $pos1 !== false && $pos1 < $pos ? $pos1 : $pos;
				$len = strpos(substr($_content, $pos), '>');
				if (strpos($_content, 'src') > $pos && strpos($_content, 'src') < $pos + $len) {
/* gets image tag w/o the closing >, it's OK */
					$imgs[] = array(substr($_content, $pos, $len), $pos1 ? 'input' : 'img', 'src');
				}
				$_content = substr_replace($_content, '', 0, $pos + $len + 1);
				$pos = $pos1 = false;
			}
		} else {
			$regexp = $this->options['page']['parallel_regexp'] ? $this->options['page']['parallel_regexp'] : '<(img|input)[^>]+(src)[^>]+>';
			preg_match_all("!" . $regexp . "!is", $content, $imgs, PREG_SET_ORDER);
		}
		if (($this->options['page']['sprites'] || $this->options['page']['scale_images']) && !empty($imgs)) {
			require_once($this->options['css']['installdir'] . 'libs/php/html.sprites.php');
			$html_sprites = new html_sprites($imgs, $this->options, $this);
			if ($this->options['page']['scale_images']) {
				$content = $html_sprites->scale($content);
			}
			if ($this->options['page']['sprites']) {
				$content = $html_sprites->process($content);
			}
		}
		if (!empty($imgs)) {
			$ignore_list = explode(" ", $this->options['page']['parallel_ignore']);
			$ignore_sprites = explode(" ", $this->options['css']['css_sprites_exclude']);
			$request_file = empty($this->basehref) ? $_SERVER['REQUEST_URI'] : $this->basehref;
			if ($this->options['page']['scale_images']) {
				if (!$this->options['page']['sprites']) {
					@include($html_sprites->convert_file_name('cache'));
				}
				$images_scaled = array();
				@include($html_sprites->convert_file_name('scale'));
				$images_scaled_source = array_keys($images_scaled);
			}
			foreach ($imgs as $image) {
				$l = strlen($image[2]) + 3;
				if ($this->options['page']['html_tidy'] && ($pos=strpos($image[0], ' ' . $image[2] . '="'))) {
					$old_src = substr($image[0], $pos + $l, strpos(substr($image[0], $pos + $l), '"'));
				} elseif ($this->options['page']['html_tidy'] && ($pos=strpos($image[0], " " . $image[2] . "='"))) {
					$old_src = substr($image[0], $pos + $l, strpos(substr($image[0], $pos + $l), "'"));
				} else {
					$old_src = preg_replace("!^['\"\s]*(.*?)['\"\s]*$!is", "$1", preg_replace("!.*[\"'\s]" . $image[2] . "\s*=\s*(\"[^\"]+\"|'[^']+'|[\S]+).*!is", "$1", $image[0]));
				}
				$old_src_param = ($old_src_param_pos = strpos($old_src, '?')) ? substr($old_src, $old_src_param_pos) : '';
/* image file name to check through ignore list */
				$img = preg_replace("@.*/@", "", $old_src);
				$absolute_src = $this->convert_path_to_absolute($old_src, array('file' => $_SERVER['REQUEST_URI']));
				if (empty($replaced[$image[0]])) {
					if ($this->options['page']['sprites'] &&
						((!in_array($img, $ignore_sprites) && !$this->options['css']['css_sprites_ignore']) ||
						(in_array($img, $ignore_sprites) && $this->options['css']['css_sprites_ignore'])) &&
						!empty($html_sprites->css_images[$absolute_src]) && !empty($html_sprites->css_images[$absolute_src][2]) &&
						(empty($this->ua_mod) || $this->ua_mod != '.ie6' || empty($this->options['css']['no_ie6']))) {
							$class = substr($html_sprites->css_images[$absolute_src][8], 1);
							if (!empty($this->options['page']['html_tidy']) &&
								(strpos($image[0], 'class') || strpos($image[0], 'CLASS'))) {
									if ($pos=strpos($image[0], ' class="')) {
										$new_image = substr($image[0], 0, $pos + 8) .
											$class . ' ' . substr($image[0], $pos + 8);
									} elseif ($pos=strpos($image[0], " class='")) {
										$new_image = substr($image[0], 0, $pos + 8) .
											$class . ' ' . substr($image[0], $end);
									} else {
										$new_image = preg_replace("!(.*['\"\s]class\s*=\s*)([\"'])?([^\"']+)([\"'])?([\s/>])(.*)!is", "$1$2$3 " .
											$class . "$4$5$6", $image[0]);
									}
							} elseif (preg_match("@['\"\s]class\s*=\s*['\"]@is", $image[0])) {
								$new_image = preg_replace("!(.*['\"\s]class\s*=\s*)([\"'])?([^\"']+)([\"'])?([\s/>])(.*)!is", "$1$2$3 " .
									$class . "$4$5$6", $image[0]);
							} elseif (preg_match("@['\"\s]class\s*=\s*@is", $image[0])) {
								$new_image = preg_replace("!(.*['\"\s]class\s*=\s*)([^\s]+)\s!is", "$1\"$2 " .
									$class . "\" ", $image[0]);
							} else {
								$s = strlen($image[1]);
								$new_image = substr($image[0], 0, $s + 1) . ' class="' .
									$class . '"' . substr($image[0], $s + 1);
							}
/* add transparent GIF or data:URI chunk */
							$new_src = (empty($this->ua_mod) ||
								substr($this->ua_mod, 3, 1) > 7) &&
								!$this->options['uniform_cache'] ?
								'data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==' :
								((empty($this->options['page']['far_future_expires_rewrite']) ?
									'' : $this->options['page']['cachedir_relative'] . 'wo.static.php?') .
									$this->options['page']['cachedir_relative'] . '0.gif');
/* are we operating with multiple hosts */
					} elseif (!empty($this->options['page']['parallel']) &&
						!empty($this->options['page']['parallel_hosts']) &&
						(!count($ignore_list) || (!in_array(str_replace($old_src_param, '', $img), $ignore_list) && (empty($ignore_list[0]) || strpos($old_src, $ignore_list[0]) === false)))) {
/* skip images on different hosts */
						if (preg_match("!//(www\.)?" . $this->host_escaped . "/+!i", $old_src) || ($absolute_src && strpos($absolute_src, '//') === false)) {
/* using secure host */
							if ($this->https && !empty($this->options['page']['parallel_https'])) {
								$new_host = $this->options['page']['parallel_https'];
							} else {
/* calculating unique sum from image src */
								$sum = 0;
								$i = ceil(strlen($old_src)/2);
								while (isset($old_src{$i++})) {
									$sum += ord($old_src{$i-1});
								}
								$host = $hosts[$sum%$count];
/* if we have dot in the distribution host - it's a domain name */
								$new_host = $host .
									((strpos($host, '.') === false) ?
									'.' . $this->host : '');
							}
							$new_src = "//" .
								$new_host .
								$absolute_src .
								preg_replace("!(www\.)?" . $this->host_escaped . "!i",
									$new_host, $old_src_param);
						} elseif ($count_satellites && !empty($satellites_hosts[0]) && empty($replaced[$old_src])) {
							$img_host = preg_replace("@(https?:)?//(www\.)?([^/]+)/.*@", "$3", $old_src);
/* check if we can distribute this image through satellites' hosts */
							if (in_array($img_host, $satellites)) {
								$new_src = preg_replace("@(https?://)(www\.)?([^/]+)/@", "$1" . $hosts[strlen($old_src)%$count] . ".$3/", $old_src);
							}
						}
/* or replacing images with rewrite to Expires setter? */
					} elseif (!empty($this->options['page']['far_future_expires_rewrite']) ||
						!empty($this->options['page']['far_future_expires_external'])) {
/* add static proxy for external images */
							if (!$absolute_src &&
								$this->options['page']['far_future_expires_external']) {
									$absolute_src = $old_src;
							}
/* do not touch dynamic images / styles / scripts -- how we can handle them? */
							if ($absolute_src &&
								preg_match("@\.(bmp|gif|png|ico|jpe?g)$@is", $absolute_src) &&
									((!empty($this->options['page']['far_future_expires_external']) &&
										($absolute_src{0} !== '/' || $absolute_src{1} === '/')) ||
									!empty($this->options['page']['far_future_expires_rewrite']))) {
										$new_src =
											$this->options['page']['cachedir_relative'] .
											'wo.static.php?' . $absolute_src;
							}
					}
					if (!empty($new_src)) {
						if (empty($new_image)) {
/* prevent replacing images from oher domains with the same file name */
							$new_src_image = str_replace($old_src, $new_src, $image[0]);
						} else {
/* replace src in image with new class */
							$new_src_image = str_replace($old_src, $new_src, $new_image);
						}
						$content = str_replace($image[0], $new_src_image, $content);
						$new_src = '';
						$new_image = '';
					}
					$replaced[$image[0]] = 1;
				}
			}
		}
		return $content;
	}

	/**
	* Returns GZIP compressed content string with header
	*
	**/
	function create_gz_compress ($content, $force_gzip = true) {
		if (!empty($this->encoding)) {
			if (!empty($force_gzip) && function_exists('gzencode')) {
				$cnt = gzencode($content, $this->options['page']['gzip_level'], FORCE_GZIP);
			} elseif (!empty($force_gzip) && function_exists('gzcompress')) {
				$size = strlen($content);
				$crc = crc32($content);
				$cnt = "\x1f\x8b\x08\x00\x00\x00\x00\x00";
				$content = gzcompress($content, $this->options['page']['gzip_level']);
				$content = substr($content, 0, -4);
				$cnt .= $content;
				$cnt .= pack('V', $crc);
				$cnt .= pack('V', $size);
			} elseif (empty($force_gzip) && function_exists('gzdeflate')) {
				$cnt = gzdeflate($content, $this->options['page']['gzip_level']);
			}
			return $cnt;
		} else {
			return false;
		}
	}

	/**
	* Sets current encoding for HTML document
	*
	**/
	function set_gzip_encoding () {
		if (!empty($_SERVER["HTTP_ACCEPT_ENCODING"]) && !empty($this->options['page']['gzip'])) {
			$gzip_no_ie = !in_array($this->ua_mod, $this->ies) || empty($this->options['page']['gzip_noie']);
			$ae = strtolower($_SERVER["HTTP_ACCEPT_ENCODING"]);
			if (strpos($ae, 'x-gzip') !== false && $gzip_no_ie) {
				$this->encoding = 'x-gzip';
				$this->encoding_ext = '.gz';
			} elseif ((strpos($ae, 'gzip') !== false || !empty($_COOKIE['_wo_gzip'])) && $gzip_no_ie) {
				$this->encoding = 'gzip';
				$this->encoding_ext = '.gz';
			} elseif (strpos($ae, 'x-deflate') !== false) {
				$this->encoding = 'x-deflate';
				$this->encoding_ext = '.df';
			} elseif (strpos($ae, 'deflate') !== false) {
				$this->encoding = 'deflate';
				$this->encoding_ext = '.df';
			}
		} elseif (empty($_SERVER['HTTP_ACCEPT_ENCODING']) && !empty($_COOKIE['_wo_gzip'])) {
			$this->encoding = 'gzip';
			$this->encoding_ext = '.gz';
		}
	}
	
	/**
	* Sets the correct gzip header
	*
	**/
	function set_gzip_header () {
		if(!empty($this->encoding) && empty($this->gzip_set)) {
			@header("Vary: Accept-Encoding,User-Agent");
			@header("Content-Encoding: " . $this->encoding);
/* try to use zlib instead of raw PHP */
			if ($this->options['page']['zlib'] && strlen(@ini_get('zlib.output_compression_level'))) {
				@ini_set('zlib.output_compression', 'On');
				@ini_set('zlib.output_compression_level', $this->options['page']['gzip_level']);
				$this->encoding = '';
				$this->encoding_ext = '';
			}
			$this->gzip_set = 1;
		}
	}

	/**
	* Compress JS or CSS and return source
	*
	**/
	function do_compress ($options, $source, $files) {
/* Save the original extension */
		$options['original_ext'] = $options['ext'];
/* Change the extension */
		if (!empty($options['gzip']) || !empty($options['far_future_expires'])) {
			$options['ext'] = "php";
		}
/* Set cachedir */
		$cachedir = $options['cachedir'];
		if ($this->web_optimizer_stage) {
			$this->write_progress($this->web_optimizer_stage++);
		}
		$source = $this->do_include($options, $source, $cachedir, $files);
		return $source;
	}

	/**
	* Include a single file
	*
	**/
	function include_bundle ($source, $newfile, $handlers, $cachedir, $include, $href = '') {
		switch ($include) {
/* move CSS file to the first occurent of CSS or before any scripts */
			default:
				if ($this->options['page']['html_tidy']) {
					$styles = strpos($source, "@@@WSSSTYLES@@@");
					$script1 = strpos($source, "<script");
					$script2 = strpos($source, "<SCRIPT");
					if ($script1 !== false && $script1 < $styles) {
						$source = substr_replace($source, $newfile . '@@@WSSSTL@@@', $script1, 0);
						$source = str_replace('@@@WSSSTYLES@@@', '', $source);
						$source = str_replace('@@@WSSSTL@@@', '@@@WSSSTYLES@@@', $source);
					} elseif ($script2 !== false && $script2 < $styles) {
						$source = substr_replace($source, $newfile . '@@@WSSSTL@@@', $script2, 0);
						$source = str_replace('@@@WSSSTYLES@@@', '', $source);
						$source = str_replace('@@@WSSSTL@@@', '@@@WSSSTYLES@@@', $source);
					} else {
						$source = substr_replace($source, $newfile, $styles, 0);
					}
				} else {
					$source = preg_replace('!@@@WSSSTYLES@@@!', $newfile . '@@@WSSSTYLES@@@', $source, 1);
				}
				break;
/* no unobtrusive but external scripts exist, avoid excluded scripts */
			case 1:
				if ($this->options['page']['html_tidy'] && ($headpos = strpos($source, '</head>'))) {
					$source = substr_replace($source, $newfile, $headpos, 0);
				} elseif ($this->options['page']['html_tidy'] && ($headpos = strpos($source, '</HEAD>'))) {
					$source = substr_replace($source, $newfile, $headpos, 0);
				} else {
					$source = preg_replace("!</head>!is", $newfile . "$0", $source);
				}
/* additional check in case of non-existing </head>, insert before <body> */
				if (!strpos($source, $newfile)) {
					$source = preg_replace("!<body[^>]*>!is", $newfile . "$0", $source);
				}
				break;
/* inject merged script to the first <script> occurrence, replace WSSSCRIPT */
			case 2:
				$source = preg_replace("!@@@WSSSCRIPT@@@!", $newfile, $source, 1);
				break;
/* add JavaScript calls before </body> */
			case 3:
				if ($this->options['page']['html_tidy'] && ($bodypos = strpos($source, '</body>'))) {
					$source = substr_replace($source, $newfile, $bodypos, 0);
				} elseif ($this->options['page']['html_tidy'] && ($bodypos = strpos($source, '</BODY>'))) {
					$source = substr_replace($source, $newfile, $bodypos, 0);
				} else {
					$source = preg_replace("!</body>!is", $newfile . "$0", $source);
/* a number of engines doesn't set </body> */
					if (!strpos($source, $newfile)) {
						$source .= $newfile;
					}
				}
/* remove JS file marker from content */
				$source = str_replace('@@@WSSSCRIPT@@@', '', $source);
				break;
/* place second CSS call to onDOMready */
			case 4:
				if (!$this->options['css']['data_uris_domloaded']) {
					$source = preg_replace("!@@@WSSSTYLES@@@!", "@@@WSSSTYLES@@@" . $newfile , $source, 1);
				} else {
					$inc = ($this->premium > 1 ? '<!--noindex-->' : '') .
						'<script type="text/javascript">//<![CDATA[' . "\n" .
						$this->domready_include .
						'var d=document,l=d.createElement("link");l.rel="stylesheet";l.type="text/css";l.href="' .
						$href .
						'";d.getElementsByTagName("head")[0].appendChild(l);' .
						$this->domready_include2 .
						(@class_exists('JFactory') && ($user = &JFactory::getUser()) && ($user->get('aid') || $user->get('id')) ? $this->domready_include3 : '') .
						"\n//]]></script>@@@WSSREADY@@@" .
						($this->premium > 1 ? '<!--/noindex-->' : '');
/* separate scripts for 2 parts, the second move to the end of the document */
					if ($this->options['page']['html_tidy'] && ($bodypos = strpos($source, '</body>'))) {
						$source = substr_replace($source, $inc, $bodypos, 0);
					} elseif ($this->options['page']['html_tidy'] && ($bodypos = strpos($source, '</BODY>'))) {
						$source = substr_replace($source, $inc, $bodypos, 0);
					} else {
						$source = preg_replace("!</body>!is", $inc . "$0", $source);
						if (!strpos($source, $inc)) {
							$source .= $inc;
						}
					}
				}
				break;
		}
		return $source;
	}

	/**
	* Include compressed JS or CSS into source and return it
	*
	**/
	function do_include ($options, $source, $cachedir, $external_array) {
		$cachedir_relative = $options['cachedir_relative'];
		$handlers = '';
/* If only one script found */
		if (!is_array($external_array)) {
			$external_array = array($external_array);
		}
		if (empty($options['file'])) {
/* Glue scripts' content / filenames */
			$scripts_string = $this->https;
			foreach ($external_array as $script) {
				$scripts_string .= (empty($script['source']) ? '' : $script['source']) . (empty($script['content']) ? '' : $script['content']);
			}
/* Get date string to make hash */
			$datestring = $this->get_file_dates($external_array, $options);
/* get options string */
			$optstring = '';
			foreach ($options as $key => $value) {
				if (is_array($value)) {
					$optstring .= '_' . implode('_', $value);
				} else {
					$optstring .= '_' . $value;
				}
			}
/* Get the cache hash, restrict by 10 symbols */
			$cache_file = substr(md5($scripts_string . $datestring . $optstring), 0, 10);
/* use general file if it has been defined */
		} else {
			$cache_file = $options['file'];
		}
		$cache_file = urlencode($cache_file . $this->ua_mod);
		$physical_file = $options['cachedir'] . $cache_file . "." . $options['ext'];
		if (empty($this->options['cache_version'])) {
			if (@is_file($physical_file)) {
				$timestamp = @filemtime($physical_file);
			} else {
				$timestamp = 0;
			}
		} else {
			$timestamp = $this->options['cache_version'];
		}
/* add BackgroundImageCache for IE6 to prevent CSS Sprites blinking */
		if (in_array($this->ua_mod, $this->ies) && !empty($options['css_sprites'])) {
			$source = $this->include_bundle($source, '<script type="text/javascript">//<![CDATA[' . "\n" .
				'try{document.execCommand("BackgroundImageCache",false,true)}catch(e){}' . "\n//]]></script>", $handlers, $cachedir, 1);
		}
/* Check if the cache file exists */
		if ($timestamp) {
/* Put in locations and remove certain scripts */
			if (!is_array($external_array)) {
				$external_array = array($external_array);
			}
			$source = $this->_remove_scripts($external_array, $source,
				$options['header'] != 'css' ? $options['header'] == 'javascript' && !$options['external_scripts_head_end'] ? 1 : 0 : 2);
/* Create the link to the new file with data:URI / mhtml */
			if (!empty($options['data_uris_separate']) && (!empty($this->options['cache_version']) || @is_file($physical_file . '.' . $options['ext']))) {
				$newfile = $this->get_new_file($options, $cache_file, $timestamp, '.' . $options['ext']);
/* raw include right after the main CSS file */
				if (empty($options['data_uris_domloaded'])) {
					$source = $this->include_bundle($source, $newfile, $handlers, $cachedir_relative, 0);
/* include via JS loader to provide fast flush of content */
				} else {
					$source = $this->include_bundle($source, $newfile, $handlers, $cachedir_relative, 4, $this->get_new_file_name($options, $cache_file, $timestamp, '.' . $options['ext']));
				}
/* include spot for HTML Sprites */
			} elseif (!empty($options['data_uris_domloaded']) && !empty($this->options['page']['sprites'])) {
				$source = $this->include_bundle($source, '', $handlers, $cachedir_relative, 4, '');
			}
			$newfile = $this->get_new_file($options, $cache_file, $timestamp);
			$source = $this->include_bundle($source, $newfile, $handlers, $cachedir_relative, $options['unobtrusive_body'] ? 3 : ($options['header'] == 'javascript' && $options['external_scripts_head_end'] ? 1 : ($options['header'] == 'javascript' ? 2 : 0)));
/* fix for some JS libraries to load resrouces dynamically */
			if (!empty($this->shadowbox_base) &&
				$options['header'] == 'javascript' &&
				!$options['inline_scripts']) {
					$source = str_replace('Shadowbox.init(', 'Shadowbox.path="' .
						$this->shadowbox_base . '";Shadowbox.init(', $source);
			}
			return $source;
		}
		$timestamp = $this->time;
		$external_file = 'http' . $this->https . '://' .
			(empty($options['host']) ? $_SERVER['HTTP_HOST'] :
				(empty($options['https']) || !$this->https ?
				$options['host'] :
				$options['https'])) .
				$this->get_new_file_name($options, $cache_file, $timestamp);
		foreach ($this->libraries as $klass => $library) {
			if (!class_exists($klass, false)) {
				require_once($options['installdir'] . 'libs/php/' . $library);
			}
		}
/* If the file didn't exist, continue. Get files' content */
		if (!empty($options['dont_check_file_mtime'])) {
			$this->get_script_content($options['tag']);
/* Replace existing array with the new content */
			$external_array = array();
			foreach ($this->initial_files as $key => $file) {
				if ($file['tag'] == $options['tag']) {
					$external_array[] = $file;
				}
			}
		}
/* Delete old files from cache */
		if (!empty($this->options['days_to_delete'])) {
			$dir = @getcwd();
			@chdir($options['cachedir']);
			$files = glob('*.' . $options['ext']);
			if (!empty($files)) {
				foreach ($files as $file) {
					if (!in_array($file, array('index.php', 'wo.static.php', 'wo.gzip.php', 'yass.loader.js', 'webo-site-speedup.php')) &&
						$this->time - filemtime($file) >
						$this->options['days_to_delete'] * 86400) {
							@unlink($file);
					}
				}
			}
			$files = glob('*.' . $options['ext'] . '.gz');
			if (!empty($files)) {
				foreach ($files as $file) {
					if ($this->time - filemtime($file) >
						$this->options['days_to_delete'] * 86400) {
							@unlink($file);
					}
				}
			}
			$files = glob('*.png');
			if (!empty($files)) {
				foreach ($files as $file) {
					if (!in_array($file, array('webo-site-speedup88.png', 'webo-site-speedup125.png', 'webo-site-speedup161.png', 'webo-site-speedup250.png')) &&
						$this->time - filemtime($file) >
						$this->options['days_to_delete'] * 86400) {
							@unlink($file);
					}
				}
			}
			$files = glob('*.gif');
			if (!empty($files)) {
				foreach ($files as $file) {
					if ($file != '0.gif' && $this->time - filemtime($file) >
						$this->options['days_to_delete'] * 86400) {
							@unlink($file);
					}
				}
			}
			$files = glob('*.jpg');
			if (!empty($files)) {
				foreach ($files as $file) {
					if ($this->time - filemtime($file) >
						$this->options['days_to_delete'] * 86400) {
							@unlink($file);
					}
				}
			}
			@chdir($dir);
		}
/* Create file */
		$contents = "";
		if (is_array($external_array)) {
/* can't simply merge&minify if we need to exclude some files */
			if (empty($options['minify_exclude']) || empty($options['minify'])) {
				foreach($external_array as $key => $info) {
/* Get the code */
					if ($file_contents = $info['content']) {
						if (!empty($options['minify_try'])) {
							$contents .= 'try{';
						}
						$contents .= $file_contents .
							($options['header'] == 'javascript' && !empty($external_array[$key+1]) ? "\n" : '');
						if (!empty($options['minify_try'])) {
							$contents .= '}catch(e){';
							if (!empty($info['file'])) {
								$contents .= 'document.write("' .
									str_replace(array('"', "\n", "\r"), array('\"', ' ', ''), $info['source']) .
									'")';
							}
							$contents .= '}';
						}
					}
				}
			}
			if ($options['tag'] === 'link' && !empty($options['include_code'])) {
				$contents .= str_replace("<br/>", "", $options['include_code']);
			}
			$source = $this->_remove_scripts($external_array, $source,
				$options['header'] != 'css' ? $options['header'] == 'javascript' && !$options['external_scripts_head_end'] ? 1 : 0 : 2);
/* add spot for HTML Sprites ? */
			$addhtml = 1;
			if ($options['css_sprites'] || ($options['data_uris'] && !in_array($this->ua_mod, $this->ies)) || ($options['mhtml'] && in_array($this->ua_mod, $this->ies)) || $options['parallel']) {
				$options['css_sprites_partly'] = 0;
				$remembered_data_uri = $options['data_uris'];
				$remembered_mhtml = $options['mhtml'];
				$options['data_uris'] = $options['mhtml'] = 0;
/* start new PHP process to create CSS Sprites */
				if (!empty($this->web_optimizer_stage) && !(($this->web_optimizer_stage - 13)%15) && $this->web_optimizer_stage < 85) {
/* skip 2 minor stages if we not in the first major stage */
					$delta = $this->web_optimizer_stage > 20 ? 6 : 0;
					@header('Location: ' . $this->chained_redirect .
						'?web_optimizer_stage=' . 
							($this->web_optimizer_stage + $delta) .
						'&username=' .
							$this->username .
						'&password=' .
							$this->password .
						'&auto_rewrite=' .
							$this->auto_rewrite .
						'&cache_version=' .
							$this->cache_version .
						'&web_optimizer_debug=1');
					$this->di();
/* prepare first 4 Sprites */
				} elseif (!empty($this->web_optimizer_stage) && !(($this->web_optimizer_stage - 16)%15) && $this->web_optimizer_stage < 85) {
					$options['css_sprites_partly'] = 1;
					$this->convert_css_sprites($contents, $options, $external_file);
					@header('Location: ' . $this->chained_redirect .
						'?web_optimizer_stage=' . 
							$this->web_optimizer_stage .
						'&username=' .
							$this->username .
						'&password=' .
							$this->password .
						'&auto_rewrite=' .
							$this->auto_rewrite .
						'&cache_version=' .
							$this->cache_version .
						'&web_optimizer_debug=1');
					$this->di();
				} elseif (!empty($this->web_optimizer_stage) && !(($this->web_optimizer_stage - 19)%15) && $this->web_optimizer_stage < 85) {
/* Create CSS Sprites in CSS dir */
					$this->convert_css_sprites($contents, $options, $external_file);
/* start new PHP process to create data:URI */
					@header('Location: ' . $this->chained_redirect .
						'?web_optimizer_stage=' . 
							($this->web_optimizer_stage + 1) .
						'&username=' .
							$this->username .
						'&password=' .
							$this->password .
						'&auto_rewrite=' .
							$this->auto_rewrite .
						'&cache_version=' .
							$this->cache_version .
						'&web_optimizer_debug=1');
					$this->di();
				} else {
/* we created all Sprites -- ready for data:URI + mhtml */
					$options['data_uris'] = $remembered_data_uri;
					$options['mhtml'] = $remembered_mhtml;
/* create correct resource file name for data:URI / mhtml inclusion */
					$resource_file = $external_file;
					if (!empty($options['data_uris_separate'])) {
						$resource_file = $this->get_new_file_name($options, $cache_file, $timestamp, '.' . $options['ext']);
					}
					if (!empty($options['minify_with']) && $options['minify_with'] == 'tidy') {
						$minified_content_array = $this->convert_css_sprites($contents, $options, $resource_file);
					} else {
/* need to remove comments before */
						$contents = $this->minify_text($contents);
						$minified_content_array = $this->convert_data_uri($contents, $options, $resource_file);
					}
					$minified_content = $minified_content_array[0];
					$minified_resource = $minified_content_array[1];
/* write data:URI / mhtml content */
					if (!empty($minified_resource) && !empty($options['data_uris_separate'])) {
/* Allow for gzipping and headers */
						if (($options['gzip'] || $options['far_future_expires']) && !empty($minified_resource)) {
							$minified_resource = $this->gzip_header[$options['header']] . $minified_resource;
						}
						$this->write_file($physical_file . '.' . $options['ext'], $minified_resource, in_array($options['ext'], array('css', 'js')), 'text/css');
/* create static gzipped versions for static gzip in nginx, Apache */
						if ($options['ext'] == 'css') {
							$c = @gzencode($minified_resource, $options['gzip_level'], FORCE_GZIP);
							if (!empty($c)) {
								$this->write_file($physical_file . '.' . $options['ext']. '.gz', $c);
							}
						}
						$newfile = $this->get_new_file($options, $cache_file, $this->time, '.' . $options['ext']);
/* raw include right after the main CSS file */
						if (empty($options['data_uris_domloaded'])) {
							$source = $this->include_bundle($source, $newfile, $handlers, $cachedir_relative, 0);
/* include via JS loader to provide fast flush of content */
						} else {
							$addhtml = 0;
							$source = $this->include_bundle($source, $newfile, $handlers, $cachedir_relative, 4, $this->get_new_file_name($options, $cache_file, $this->time, '.' . $options['ext']));
						}
					} elseif (!empty($minified_content)) {
						$minified_content .= $minified_resource;
					}
				}
				if (!empty($minified_content)) {
					$contents = $minified_content;
				}
			}
/* include spot for HTML Sprites */
			if ($addhtml && !empty($options['data_uris_domloaded']) && !empty($this->options['page']['sprites'])) {
				$source = $this->include_bundle($source, '', $handlers, $cachedir_relative, 4, '');
			}
		}
		if (!empty($contents)) {
/* Allow for minification of javascript */
			if ($options['header'] == "javascript" && $options['minify']) {
				$contents = $this->minify_javascript($contents, $options);
			}
/* we need to exclude some files from minify */
		} elseif(!empty($options['minify_exclude']) && $options['minify']) {
			$exclude_list = explode(" ", trim($options['minify_exclude']));
			foreach($external_array as $key => $info) {
/* Get the code */
				if ($file_contents = $info['content']) {
					$content = '';
					if (!empty($options['minify_try'])) {
						$content .= 'try{';
					}
					$content .= $file_contents;
					if (!empty($options['minify_try'])) {
						$content .= '}catch(e){';
						if (!empty($info['file'])) {
							$content .= 'document.write("' .
								str_replace(array('<', '"', "\n", "\r"), array('\x3c', '\"', ' ', ''), $info['source']) .
								'")';
						}
						$content .= '}';
					}
					if ($options['header'] == "javascript" &&
						!in_array(preg_replace("@.*/@", "", $info['file']), $exclude_list)) {
							$content = $this->minify_javascript($content, $options);
					}
					$contents .= $content .
						($options['header'] == 'javascript' && !empty($external_array[$key+1]) ? "\n" : '');
				}
			}
		}
		if (!empty($contents)) {
/* fix for some JS libraries to load resrouces dynamically */
			if (!empty($this->shadowbox_base) &&
				$options['header'] == 'javascript' &&
				$options['inline_scripts']) {
					$contents = str_replace('Shadowbox.init(', 'Shadowbox.path="' .
						$this->shadowbox_base . '";Shadowbox.init(', $contents);
			}
/* remove HTML comments fro CSS code */
			if ($options['header'] == 'css') {
				$contents = str_replace(array('<!--', '-->'), '', $contents);
			}
/* Allow for minification of CSS, CSS Sprites uses CSS Tidy -- already minified CSS */
			if (!empty($options['minify']) &&
				empty($options['css_sprites']) &&
/* data:URI with regular expressions must clean the comments before */
				empty($options['data_uris']) &&
				empty($options['mhtml'])) {
					if ($options['minify_with'] == 'basic') {
/* Minify CSS */
						$contents = $this->minify_text($contents);
					} elseif ($options['minify_with'] == 'cssmin') {
						try {
							$this->cssmin = new CSSmin();
							$minified_contents = $this->cssmin->run($contents);
						} catch (Exception $e) {}
						if (!empty($minified_contents)) {
							$contents = $minified_contents;
						} else {
							$contents = $this->minify_text($contents);
						}
					}
			}
/* Change absolute paths for distributed URLs */
			if ($options['host'] && $options['header'] == 'css') {
				$host = empty($options['https']) || !$this->https ? $options['host'] : $options['https'];
				if (strpos($host, "/") !== false) {
					$folder = preg_replace("@^[^/]+/(.*)/?$@is", "$1/", $host);
					$contents = preg_replace("@(url\(\s*['\"]?)/@is", "$1/" . $folder, $contents);
				}
			}
			if (!empty($contents) && (!empty($this->ua_mod) || $this->options['page']['uniform_cache']) && $options['header'] == 'css') {
				$selectors = explode("}", $contents);
				if (count($selectors) > 4096) {
					$contents_import = implode("}", array_slice($selectors, 4096));
					$contents = implode("}", array_slice($selectors, 0, 4095)) .
						'}@import (' . str_replace("." . $options['ext'], '-import.' . $options['ext'], $cache_file) . ');';
					$physical_file_import = str_replace("." . $options['ext'], '-import.' . $options['ext'], $physical_file);
				}
			}
/* Allow for gzipping and headers */
			if ($options['gzip'] || $options['far_future_expires']) {
				$contents = $this->gzip_header[$options['header']] .
/* fix <?xml includes into JS code not to break PHP file */
					(in_array($options['ext'], array('css', 'js')) || $options['header'] == 'css' ? $contents : str_replace("<?", "\\x3C?", $contents));
				if (!empty($contents_import)) {
					$contents_import = $this->gzip_header[$options['header']] . $contents_import;
				}
			}
			if (!empty($contents)) {
/* write first 4096 selectors for IE */
				if (!empty($contents_import)) {
/* Write to cache and display */
					$this->write_file($physical_file_import, $contents_import, in_array($options['ext'], array('css', 'js')), 'text/css');
					if ($options['ext'] == 'css') {
						$c = @gzencode($contents_import, $options['gzip_level'], FORCE_GZIP);
						if (!empty($c)) {
							$this->write_file($physical_file_import . '.gz', $c);
						}
					}
				}
/* create static gzipped versions for static gzip in nginx, Apache */
				if ($options['ext'] == 'css' || $options['ext'] == 'js') {
					$c = @gzencode($contents, $options['gzip_level'], FORCE_GZIP);
					if (!empty($c)) {
						$this->write_file($physical_file . '.gz', $c);
					}
				}
/* Write to cache and display */
				$this->write_file($physical_file, $contents, in_array($options['ext'], array('css', 'js')), $options['ext'] == 'js' ? 'application/javascript' : 'text/css');
/* create static gzipped versions for static gzip in nginx, Apache */
				if ($options['ext'] == 'css' || $options['ext'] == 'js') {
					$c = @gzencode($contents, $options['gzip_level'], FORCE_GZIP);
					if (!empty($c)) {
						$this->write_file($physical_file . '.gz', $c);
					}
				}
/* Create the link to the new file */
				$newfile = $this->get_new_file($options, $cache_file, $this->time);
				$source = $this->include_bundle($source, $newfile, $handlers, $cachedir_relative, $options['unobtrusive_body'] ? 3 : ($options['header'] == 'javascript' && $options['external_scripts_head_end'] ? 1 : ($options['header'] == 'javascript' ? 2 : 0)));
			}
		}
		return $source;
	}
	
	/**
	* Minifies JavaScript code according to current options
	*
	*/

	function minify_javascript ($code, $options) {
		$minified_code = '';
		if ($options['minify_with'] == 'google') {
			try {
				$this->googlecompiler = new GoogleCompiler($options['cachedir'], $options['installdir']);
				$minified_code = $this->googlecompiler->compress($code);
			} catch (Exception $e) {}
		} elseif ($options['minify_with'] == 'packer') {
			try {
				$this->packer = new JavaScriptPacker($code, 'Normal', false, false);
				$minified_code = $this->packer->pack();
			} catch (Exception $e) {}
		} elseif ($options['minify_with'] == 'yui' ) {
			try {
				$this->yuicompressor = new YuiCompressor($options['cachedir'], $options['installdir'], $this->charset);
				$minified_code = $this->yuicompressor->compress($code);
			} catch (Exception $e) {}
		}
		if ($options['minify_with'] == 'jsmin' ||
			(!empty($options['minify_with']) &&
			empty($minified_code))) {
				try {
					$this->jsmin = new JSMin($code);
					$minified_code = $this->jsmin->minify($code);
				} catch (Exception $e) {}
		}
		if (empty($options['minify_with']) || empty($minified_code)) {
/* Remove comments //, can't handle easily in-string case */
			$minified_code = preg_replace("!^//.*?\r?\n!is", "\n", $code);
/* Remove comments /**, leave conditional compilation */
			$minified_code = preg_replace("!(^|[\r\n\t\s]+)/\*[^@].*?\*/!is", "", $minified_code);
		}
		if (!empty($minified_code)) {
			$code = preg_replace("!^[\r\n\t\s]*!s", "", $minified_code);
		}
		return $code;
	}

	/**
	* Replaces scripts calls or css links in the source with a marker
	*
	*/
	function _remove_scripts ($external_array, $source, $mark = false) {
		$replacement = $mark ? $mark > 1 ? '@@@WSSSTYLES@@@' : '@@@WSSSCRIPT@@@' : '';
		if (is_array($external_array)) {
			foreach ($external_array as $key => $value) {
/* Remove script, replace the first one with the mark to insert merged script */
				$source = str_replace($value['source'], $replacement, $source);
				if ($mark) {
					$replacement = '';
				}
			}
		}
		return $source;
	}

	/**
	* Returns the HTML code for our new compressed file
	*
	**/
	function get_new_file ($options, $cache_file, $timestamp = false, $add = false) {
		$nofollow = empty($this->ua_mod) && $options['ext'] == 'php' && !$this->options['uniform_cache'];
		$newfile = '<' . $options['tag'] .
			' type="' . $options['type'] . '" ' .
			$options['src'] . '="' . $this->get_new_file_name($options, $cache_file, $timestamp, $add) . '"'.
/* IE7- don't understand stylesheet nofollow in rel */
			($nofollow || !empty($options['rel']) ? ' rel="' .
				(empty($options['rel']) ? '' : $options['rel']) .
				(!empty($options['rel']) && $nofollow ? ' ' : '') .
				($nofollow ? 'nofollow' : '') . '"' : '') . 
			(empty($options['self_close']) ? '></' . $options['tag'] . '>' : (empty($this->xhtml) ? '>' : '/>'));
		return $newfile;
	}

	/**
	* Returns the filename for our new compressed file
	*
	**/
	function get_new_file_name ($options, $cache_file, $timestamp = false, $add = false) {
		$timestamp = $options['far_future_expires_php'] ? $timestamp : false;
		return (empty($options['host']) ? '' :
			($this->options['page']['cache'] && !$this->options['page']['https_separate'] ? '//' : 'http' . $this->https . '://') .
			$options['host']) .
			$options['cachedir_relative'] . 
			$cache_file .
			($add ?  '.' . $options['ext'] : '') .
			($timestamp && $options['far_future_expires_rewrite'] ? '.wo' . $timestamp : '') .
			($add ? $add : '.' . $options['ext']) .
			($timestamp && !$options['far_future_expires_rewrite'] ? '?' . $timestamp : '');
	}

	/**
	* Returns the last modified dates of the files being compressed
	* In this way we can see if any changes have been made
	**/
	function get_file_dates ($files, $options) {
/* option added by janvarev */
		if (!empty($options['dont_check_file_mtime']) && strlen($this->lc) == 29) {
			return;
		}
		$dates = false;
		if (!empty($files) && is_array($files)) {
			foreach($files AS $key => $value) {
				if (!empty($value['file'])) {
					$value['file'] = $this->get_file_name($value['file']);
					if (@file_exists($value['file'])) {
						$thedate = filemtime($value['file']);
						$dates[] = $thedate;
					}
				}
			}	
		}
		if (is_array($dates)) {
			return implode(".", $dates);
		}
		return;
	}

	/**
	* Get full pathname for the given file
	*
	**/
	function get_file_name ($file) {
		if (is_array($file) && count($file)>0) {
			$file = $file[0];
		}
		$file = $this->strip_querystring(preg_replace("@^https?://(www\.)?" . $this->host_escaped . "/+@", "/", $file));
		if (substr($file, 0, 1) == "/") {
			return $this->view->prevent_trailing_slash($this->options['document_root']) . $file;
		} else {
			return $this->view->paths['full']['current_directory'] . $file;
		}
	}

	/**
	* Resursively resolve all @import in CSS files and get files' content
	* The second param marks inline styles case
	*
	**/
	function resolve_css_imports ($src, $inline = false, $previous = false) {
		$content = false;
		$file = '';
		if (!$inline && $src) {
			$file = $this->get_file_name($src);
/* dynamic file */
			if (!preg_match("!\.css$!is", $file) || strpos($file, 'index.php') !== false) {
				$dynamic_file = $src;
/* touch only non-external scripts */
				if (!strpos($dynamic_file, "://") && strpos($dynamic_file, '//') !== 0) {
					$dynamic_file = "http://" . $_SERVER['HTTP_HOST'] . $this->convert_path_to_absolute($file, array('file' => $_SERVER['REQUEST_URI']), true);
				}
				$file = $this->options['css']['cachedir'] . $this->get_remote_file($this->resolve_amps($dynamic_file), 'link');
			}
			if (@is_file($file)) {
				$content = $this->file_get_contents($file);
			}
		} else {
			$content = $src;
		}
		$content = $this->resolve_amps($content);
		if (@is_file($file) || $inline) {
/* remove commented @import. First of all glue CSS files, optimiza only secondly */
			$content = preg_replace("!/\*\s*@import.*?\*/!is", "", $content);
/* new RegExp from xandrx */
			preg_match_all('!@import\s*(url)?\s*\(?([^;]+?)\)?;!i', $content, $imports, PREG_SET_ORDER);
			if (is_array($imports)) {
				foreach ($imports as $import) {
					$src = false;
					if (isset($import[2])) {
						$src = $import[2];
						$src = trim($src, '\'" ');
					}
					$remote = '';
					if (strpos($src, "//") !== false && !preg_match('@//(www\.)?' . $this->host_escaped . '/@', $src)) {
						$remote = $src;
						$src = $this->get_remote_file($src);
					}
					if ($src) {
						$saved_directory = $this->view->paths['full']['current_directory'];
						$this->view->paths['full']['current_directory'] = preg_replace("/[^\/]+$/", "", $file);
/* start recursion */
						if (!$previous || $remote != $previous) {
							$content = str_replace($import[0], $this->convert_paths_to_absolute($this->resolve_css_imports($src, 0, $remote), array('file' => str_replace($this->options['document_root'], "/", $this->get_file_name($src))), 0, 1), $content);
						}
/* return remembed directory */
						$this->view->paths['full']['current_directory'] = $saved_directory;
					}
				}
			}
		}
		return $content;
	}

	/**
	* Gets an array of scripts/css files to be processed
	*
	**/
	function get_script_array () {
/* get head with all content */
		$this->get_head();
		$curl = function_exists('curl_init');
/* strange thing: array is filled even if string is empty */
		$excluded_scripts_css = explode(" ", $this->options['css']['external_scripts_exclude']);
		$excluded_scripts_js = explode(" ", $this->options['javascript']['external_scripts_exclude']);
		if ($this->options['javascript']['minify'] || $this->options['javascript']['gzip'] || $this->options['page']['parallel_javascript'] || $this->options['javascript']['rocket'] || $this->options['javascript']['reorder'] || $this->options['javascript']['external_scripts']) {
			if (empty($this->options['javascript']['minify_body']) || empty($this->options['javascript']['inline_scripts_body'])) {
				$toparse = $this->head;
			} else {
				$toparse = $this->body;
			}
/* find all scripts from head */
			$regex = "!(<script[^>]*>)(.*?</script>)!is";
			preg_match_all($regex, $toparse, $matches, PREG_SET_ORDER);
			$i = 0;
			if (!empty($matches)) {
				foreach($matches as $match) {
					$file = array(
						'tag' => 'script',
						'source' => $match[0],
						'content' => preg_replace("@(<script[^>]*>|</script>)@is", "", $match[0])
					);
					if ($this->options['css']['reorder']) {
						$file['position'] = strpos($toparse, $file['source']);
					}
					preg_match_all("@src\s*=\s*(?:\"([^\"]+)\"|'([^']+)'|([\S]+))@is", $match[1], $variants, PREG_SET_ORDER);
					if (is_array($variants)) {
						foreach ($variants as $variant_type) {
							$variant_type[1] = ($variant_type[1] === '') ? (($variant_type[2] === '') ? str_replace('>', '', $variant_type[3]) : $variant_type[2]) : $variant_type[1];
							$file['file'] = $this->convert_basehref(trim($this->strip_querystring($variant_type[1])));
							$file['file_raw'] = $variant_type[1];
						}
					}
/* skip external files if option is disabled */
					if (($this->options['javascript']['external_scripts'] && $curl) ||
						(!empty($file['file']) && preg_match("@(index\.php/|\.js$)@i", $file['file']) &&
							(!strpos($file['file'], '//') ||
							preg_match("@//(www\.)?" . $this->host_escaped . "/@is", $file['file']))) ||
						(empty($file['file']) &&
							$this->options['javascript']['inline_scripts'])) {
/* filter scripts through include mask */
								if (!isset($this->options['javascript']['external_scripts_mask']) ||
									!isset($this->options['javascript']['external_scripts_mask']{$i}) ||
									$this->options['javascript']['external_scripts_mask']{$i} == 'x') {
									$this->initial_files[] = $file;
								}
								if (isset($this->options['javascript']['external_scripts_mask']) &&
									(empty($file['file']) || !in_array(preg_replace("@.*/@", "", $file['file']), $excluded_scripts_js))) {
									$i++;
								}
/* fix shadowbox loader */
								if (!empty($file['file']) && strpos($file['file'], 'shadowbox.js')) {
									$this->shadowbox_base_raw = preg_replace("@^(https?://" .
										$this->host_escaped . ")?/?(.*/)[^/]+$@", "$2", $file['file']);
									$this->shadowbox_base = (empty($this->options['javascript']['host']) ?
										'' : '//' . $this->options['javascript']['host']) .
										'/' . $this->shadowbox_base_raw;
								}
/* fix scriptaculous loader */
								if (!empty($file['file']) && ($acpos = strpos($variant_type[1], '?load='))) {
									$scripts = explode(',', substr($variant_type[1], $acpos + 6));
									$acbase = preg_replace("@/[^/]+$@", '/', $file['file']);
									foreach ($scripts as $script) {
										$acfile = array(
											'tag' => 'script',
											'source' => '',
											'content' => '',
											'file' => $acbase . $script . '.js'
										);
										$this->initial_files[] = $acfile;
									}
								}
/* fix niftycube loader */
								if (!empty($file['file']) && strpos($file['file'], 'niftycube.js')) {
									$niftycube_base = preg_replace("@^(https?://" .
										$this->host_escaped . ")?/(.*/)[^/]+$@", "$2", $file['file']);
									$source = '<link type="text/css" rel="stylesheet" href="' . $niftycube_base . 'niftyCorners.css"' . ($this->xhtml ? '/' : '') . '>';
									$this->initial_files[] = array(
										'tag' => 'link',
										'source' => '<link type="text/css" rel="stylesheet" href="' .
											$niftycube_base . 'niftyCorners.css">',
										'file' => $niftycube_base . 'niftyCorners.css',
										'file_raw' => $niftycube_base . 'niftyCorners.css'
									);
									$this->content = str_replace($file['source'], $source . $file['source'], $this->content);
								}
					}
				}
			}
/* additional cycle - due to complex logic of JS inline/files merging */
			if ($this->options['javascript']['minify_body'] + $this->options['javascript']['inline_scripts_body'] == 1) {
/* find all scripts from body */
				preg_match_all("!(<script[^>]*>)(.*?</script>)!is", str_replace($this->head, "", $this->body), $matches, PREG_SET_ORDER);
				if (!empty($matches)) {
					foreach($matches as $match) {
						$file = array(
							'tag' => 'script',
							'source' => $match[0],
							'content' => preg_replace("@(<script[^>]*>|</script>)@is", "", $match[0])
						);
						if ($this->options['javascript']['reorder']) {
							$file['position'] = strpos($toparse, $file['source']);
						}
						preg_match_all("@src\s*=\s*(?:\"([^\"]+)\"|'([^']+)'|([\S]+))@is", $match[1], $variants, PREG_SET_ORDER);
						if (is_array($variants)) {
							foreach ($variants as $variant_type) {
								$variant_type[1] = ($variant_type[1] === '') ? (($variant_type[2] === '') ? str_replace('>', '', $variant_type[3]) : $variant_type[2]) : $variant_type[1];
								$file['file'] = $this->convert_basehref(trim($this->strip_querystring($variant_type[1])));
								$file['file_raw'] = $variant_type[1];
							}
						}
/* skip external files if option is disabled */
						if ((empty($file['file']) &&
								$this->options['javascript']['inline_scripts_body']) ||
							(!empty($file['file']) &&
								$this->options['javascript']['minify_body'] && ($curl ||
								(preg_match("@(index\.php/|\.js$)@i", $file['file']) &&
								(!strpos($file['file'], '//') ||
								preg_match("@//(www\.)?" . $this->host_escaped . "/@is", $file['file'])))))) {
/* filter scripts through include mask */
									if (!isset($this->options['javascript']['external_scripts_mask']) ||
										!isset($this->options['javascript']['external_scripts_mask']{$i}) ||
										$this->options['javascript']['external_scripts_mask']{$i} == 'x') {
											$this->initial_files[] = $file;
									}
									if (!empty($file['file']) &&
										isset($this->options['javascript']['external_scripts_mask']) &&
										!in_array(preg_replace("@.*/@", "", $file['file']), $excluded_scripts_js)) {
										$i++;
									}
						}
					}
				}
			}
		}
		if ($this->options['css']['minify'] || $this->options['css']['gzip'] || $this->options['page']['parallel_css'] || $this->options['css']['rocket'] || $this->options['css']['reorder']) {
			if (empty($this->options['css']['minify_body'])) {
				$toparse = $this->head;
			} else {
				$toparse = $this->body;
			}
/* find all CSS links from head and inine styles */
			if (empty($this->options['css']['inline_scripts']) && $this->options['page']['html_tidy'] && !strpos($toparse, '<style') && !strpos($toparse, '<STYLE')) {
				$regex = "!(<link[^>]+rel\\s*=\\s*(\"stylesheet\"|'stylesheet'|stylesheet)[^>]*>(</link>)?)!is";
			} else {
				$regex = "!(<link[^>]+rel\\s*=\\s*(\"stylesheet\"|'stylesheet'|stylesheet)[^>]*>(</link>)?|<style[^>]*>.*?</style>)!is";
			}
			preg_match_all($regex, $toparse, $matches, PREG_SET_ORDER);
			if (!empty($matches)) {
				foreach($matches as $match) {
					$file = array(
						'tag' => 'link',
						'source' => $match[0],
						'content' => preg_replace("@(<link[^>]+>|<style[^>]*>|<\/style>)@is", "", $match[0]),
					);
					if ($this->options['javascript']['reorder']) {
						$file['position'] = strpos($toparse, $file['source']);
					}
					preg_match_all("@(media|href)\s*=\s*(?:\"([^\"]*)\"|'([^']*)'|([^\s>]*))@is", $match[0], $variants, PREG_SET_ORDER);
					if (is_array($variants)) {
						foreach($variants as $variant_type) {
							$variant_type[1] = strtolower($variant_type[1]);
							$variant_type[2] = empty($variant_type[2]) ? (empty($variant_type[3]) ? (empty($variant_type[4]) ? '' : $variant_type[4]) : $variant_type[3]) : $variant_type[2];
							switch ($variant_type[1]) {
								case "href":
									$file['file'] = $this->convert_basehref(trim($this->strip_querystring($variant_type[2])));
									$file['file_raw'] = $variant_type[2];
									break;
								default:
/* skip media="all|screen" to prevent Safari bug with @media all{} and @media screen{} */
									if ($variant_type[1] != 'media' || ($variant_type[1] == 'media' && !preg_match("@^(all|screen|''|\"\")$@i", $variant_type[2]))) {
										$file[$variant_type[1]] = $variant_type[2];
									}
									break;
							}
						}
					}
/* skip external files if option is disabled */
					if (($this->options['css']['external_scripts'] && $curl) ||
						(!empty($file['file']) && preg_match("@(index\.php/|\.css$)@i", $file['file']) &&
							(!strpos($file['file'], '//') ||
							preg_match("@//(www\.)?" . $this->host_escaped . "/@is", $file['file']))) ||
						(empty($file['file']) && $this->options['css']['inline_scripts'])) {
							$this->initial_files[] = $file;
					}
				}
			}
/* add mark for HTML sprites styles */
		} elseif ($this->options['page']['sprites']) {
			$this->content = preg_replace("!(<head[^>]*>)!is", "$1@@@WSSSTYLES@@@", $this->content);
		}
		if (is_array($this->initial_files)) {
/* remove duplicates of styles/scripts from head */
			if ($this->options['javascript']['remove_duplicates'] && !$this->options['javascript']['minify_body']) {
				$e = count($this->initial_files);
				$to_remove = array();
				for ($i=0; $i<$e-2; $i++) {
					if (!empty($this->initial_files[$i])) {
						$value = $this->initial_files[$i];
						for ($j=$i+1; $j<$e; $j++) {
							if (!empty($this->initial_files[$j])) {
								$v = $this->initial_files[$j];
								if ($value['source'] == $v['source']) {
									unset($this->initial_files[$j]);
//									$to_remove[] = "!" . preg_quote($v['source']) . "!is";
								}
							}
						}
					}
				}
/*				if (count($to_remove)) {
					$this->content = preg_replace($to_remove, '', $this->content, 1);
				}*/
			}
/* get remote files */
			foreach ($this->initial_files as $key => $value) {
				if (!empty($value['file'])) {
					$dynamic = !preg_match("/\.(css|js)$/is", $value['file']) || strpos($value['file'], 'index.php') !== false;
					$external = strlen($value['file']) > 7 && (strpos($value['file'], "://") || strpos($value['file'], '//') === 0);
					if ($dynamic || $external) {
/* exclude files from the same host */
						if(!preg_match("@//(www\.)?". $this->host_escaped . "@s", $value['file'])) {
/* don't get actual files' content if option isn't enabled */
							if ($this->options[$value['tag'] == 'script' ? 'javascript' : 'css']['external_scripts']) {
/* get an external file */
								if ($dynamic) {
/* dynamic file */
									$file = $this->get_remote_file(($external ? '' : 'http://' . $this->host) . $this->resolve_amps($value['file_raw']), $value['tag']);
/* static file */
								} else {
									$file = $this->get_remote_file($value['file'], $value['tag']);
								}
								if (!empty($file)) {
									$value['file'] = $this->initial_files[$key]['file'] = $this->options['javascript']['cachedir_relative'] . $file;
								} else {
									unset($this->initial_files[$key]);
								}
							} else {
								if (empty($value['content'])) {
									unset($this->initial_files[$key]);
								}
							}
						} else {
							$value['file'] = preg_replace("!https?://(www\.)?".
								$this->host_escaped . "/+!s", "/", $value['file']);
						}
					}
				}
			}
/* get files' content if Rocket */
			if ($this->options['javascript']['rocket'] || $this->options['css']['rocket']) {
				$this->get_script_content();
			}
/* enable caching / gzipping proxy? */
			$rewrite_css = ($this->options['css']['far_future_expires_static'] ||
				$this->options['css']['gzip']);
			$rewrite_js = ($this->options['javascript']['far_future_expires_static'] ||
				$this->options['javascript']['gzip']);
			$niftyUsed = 0;
			$replace_from = $replace_to = $replace_position_type = $replace_position = array();
/* Remove empty sources and any externally linked files */
			foreach ($this->initial_files as $key => $value) {
/* exclude niftyCorners duplicate */
				if (!empty($value['file']) && strpos($value['file'], 'niftyCorners.css')) {
					if ($niftyUsed) {
						unset($this->initial_files[$key]);
					} else {
						$niftyUsed = 1;
					}
				}
				$use_proxy = (!$this->options['javascript']['minify'] && $value['tag'] == 'script') ||
					(!$this->options['css']['minify'] && $value['tag'] == 'link');
				$replaces_set = 0;
/* but keep CSS/JS w/o src to merge into unobtrusive loader, also exclude files from ignore_list */
				if (($value['tag'] == 'script' && ((empty($value['file']) &&
					!$this->options['javascript']['inline_scripts']) ||
					(!empty($excluded_scripts_js[0]) &&
						!empty($value['file']) &&
						(in_array(preg_replace("@.*/@", "", $value['file']), $excluded_scripts_js) ||
						in_array($value['file'], $excluded_scripts_js))) ||
						(!$this->options['javascript']['minify'] && $this->options['page']['parallel_javascript']))) ||
					($value['tag'] == 'link' && ((empty($value['file']) &&
					!$this->options['css']['inline_scripts']) ||
					(!empty($excluded_scripts_css[0]) &&
						!empty($value['file']) &&
						(in_array(preg_replace("@.*/@", "", $value['file']), $excluded_scripts_css) ||
						in_array($value['file'], $excluded_scripts_css))) ||
						(!$this->options['css']['minify'] && $this->options['page']['parallel_css']))) ||
/* skip optimization if WEBONOTOPTIMIZE flag is used */
					(!empty($value['content']) && strpos($value['content'], 'WEBONOTOPTIMIZE') !== false && $this->premium > 1)) {
/* just skip them */
					unset($this->initial_files[$key]);
					$use_proxy = 1;
/* rewrite skipped file with CDN host */
					if (!empty($value['file']) &&
						(($value['tag'] == 'link' && $this->options['page']['parallel_css']) ||
						($value['tag'] == 'script' && $this->options['page']['parallel_javascript'])) &&
						(preg_match("@//(www\.)?" . $this->host_escaped . "/+@", $value['file']) ||
						(substr($value['file'], 0, 1) == '/' && substr($value['file'], 1, 1) != '/'))) {
							$host = $value['tag'] == 'link' ?
								$this->options['css']['host'] : 
								$this->options['javascript']['host'];
							$new_src = (empty($host) ? "" : "//" . $host) .
								preg_replace("@https?://(www\.)?" .
								$this->host_escaped .
								"/+@", "/", $value['file']);
							$new_script = str_replace($value['file'],
								$new_src, $value['file_raw']);
							$this->content = str_replace($value['file_raw'],
								$new_script, $this->content);
							if ($this->options['javascript']['reorder']) {
								$value['source'] = str_replace($value['file_raw'], $new_script, $value['source']);
								$value['file_raw'] = $new_script;
							}
							$use_proxy = 0;
					}
				}
				$proxy = $use_proxy &&
					(($value['tag'] == 'link' && $rewrite_css) ||
					($value['tag'] == 'script' && $rewrite_js)) &&
					!empty($value['file']) && !preg_match("!\.php$!", $value['file']);
				$rewrite_to = empty($value['file_raw']) ? '' : $value['file_raw'];
				if ($proxy && !empty($value['file'])) {
					$value['file'] = preg_replace("@https?://(www\.)?" .
						$this->host_escaped . "/+@", "/", $value['file']);
					if ($f = $this->convert_path_to_absolute($value['file'], array('file' => $_SERVER['REQUEST_URI']))) {
						$rewrite_to = '//' . $this->options['host'] . str_replace($value['file'],
							$this->options['page']['cachedir_relative'] . 
							(($value['tag'] == 'link' && $this->options['css']['gzip']) ||
								($value['tag'] == 'script' && $this->options['javascript']['gzip']) ?
								'wo.gzip.php' : 'wo.static.php') .
							'?' . $f, $value['file']);
					}
				}
/* rewrite skipped file with caching proxy, skip dynamic files */
				if (empty($_COOKIE['WSS_ROCKET']) &&
					(($value['tag'] == 'link' && $this->options['css']['rocket']) ||
					($value['tag'] == 'script' && $this->options['javascript']['rocket']))) {
						$matched = 0;
						$replace_from[] = $value['source'];
						$replace_type[] = $value['tag'];
						$matched = preg_match("!(mootools(\.js|-more|-core|_release|\.x|\.v|\.min)|[^\.-]jquery(-ui|.min|\.js|\.1|-1|\.v|\.core|\.pack)|prototype(\.min|\.js|\.rev))!is", $value['file_raw']);
						if (empty($matched)) {
							$replace_to[] = ($value['tag'] == 'link' ? '<style type="text/css"' .
								(empty($value['media']) ? '' : ' media="' . $value['media'] . '"') . '>' : "<script type='text/javascript'>//<![CDATA[\n") .
								str_replace(array('</', '<!--'), array('\x3C/', '\x3C!--'), $value['content']) .
								($value['tag'] == 'link' ? '</style>' : "\n//]]></script>");
							if (!empty($value['file'])) {
								$files_postload[] = (strpos($rewrite_to, '//') !== false ? '' : $this->options['host']) . $rewrite_to;
							}
						} elseif (!empty($value['file']) && $proxy) {
							$replace_to[] = str_replace($value['file_raw'], $rewrite_to, $value['source']);
						} else {
							$replace_to[] = $value['source'];
						}
						$use_proxy = $proxy = 0;
						$replaces_set = 1;
				}
/* rewrite skipped file with caching proxy, skip dynamic files */
				if ($proxy && !empty($value['file']) && (!preg_match("!wo[0-9a-f]+!", $value['file']) || $this->options['page']['far_future_expires_external'])) {
					$replace_from[] = $value['source'];
					$replace_to[] = str_replace($value['file_raw'], $rewrite_to, $value['source']);
					$replaces_set = 1;
				}
				if ($this->options['javascript']['reorder']) {
					if (!$replaces_set) {
						$replace_from[] = $replace_to[] = $value['source'];
					}
					$i = $value['position'];
					$i = ($i < 1000000 ? '0' : '') . ($i < 100000 ? '0' : '') . ($i < 10000 ? '0' : '') . ($i < 1000 ? '0' : '') . ($i < 100 ? '0' : '') . ($i < 10 ? '0' : '') . $i;
					$j = count($replace_to) - 1;
					$j = ($j < 1000 ? '0' : '') . ($j < 100 ? '0' : '') . ($j < 10 ? '0' : '') . $j;
					$replace_position_type[] = ($value['tag'] == 'link' ? 'a' : 'b') . $i . $j;
					$replace_position[] = $i . $j;
				}
			}
/* reorder scripts/styles */
			if ($this->options['javascript']['reorder']) {
				sort($replace_position_type);
				$rto = array();
				foreach ($replace_position_type as $value) {
					$rto[] = $replace_to[round(substr($value, 8))];
				}
				$replace_to = $rto;
				sort($replace_position);
				$rfrom = array();
				foreach ($replace_position as $value) {
					$rfrom[] = $replace_from[round(substr($value, 7))];
				}
				$replace_from = $rfrom;
			}
/* rewrite scripts and styles */
			if (count($replace_from)) {
				if ($this->options['javascript']['reorder']) {
/* remove duplicates */
					foreach ($replace_from as $key => $value) {
						if ($replace_to[$key] == $value) {
							unset($replace_from[$key]);
							unset($replace_to[$key]);
						}
					}
/* make safe replacement a->b, b->a */
					foreach ($replace_from as $key => $value) {
							$this->content = str_replace($value, '@@@WSS_REPLACEMENT' . $key . '@@@', $this->content);
					}
					foreach ($replace_to as $key => $value) {
							$this->content = str_replace('@@@WSS_REPLACEMENT' . $key . '@@@', $value, $this->content);
					}
				} else {
					$this->content = str_replace($replace_from, $replace_to, $this->content);
				}
				if (!empty($files_postload)) {
					$this->options['page']['postload'] = (empty($this->options['page']['postload']) ? '' : ' ') . implode(" ", $files_postload); 
				}
			}
/* skip mining files' content if don't check MTIME */
			if (!$this->options['javascript']['dont_check_file_mtime'] && !$this->options['javascript']['rocket'] && !$this->options['css']['rocket']) {
				$this->get_script_content();
			}
		}
	}

	/**
	* Gets an content for array of scripts/css files
	*
	**/
	function get_script_content ($tag = false) {
/* to get inline values */
		$last_key = array();
/* to get inline values on empty non-inline */
		$last_key_flushed = array();
		$stored = array();
/* duplicates spots */
		$duplicates = array(
/* jQuery */
			array(
				'regexp' => 'jquery([v0-9\.\-\[\]])*(pack|min)?\.(js|php)(\.gz)?',
				'exists' => 0
			),
/* Prototype */
			array(
				'regexp' => 'prototype([rev0-9\.\-_])*(packer|min|lite)?\.(js|php)(\.gz)?',
				'exists' => 0
			),
/* MooTools */
			array(
				'regexp' => 'mootools(_release)?([xv0-9\.\-_])*(core-yc|core|yui-compressed|comp|min)?\.(js|php)(\.gz)?',
				'exists' => 0
			),
/* OpenAPI */
			array(
				'regexp' => 'openapi.js?',
				'exists' => 0
			),
/* SWFobject */
			array(
				'regexp' => 'swfobject.js',
				'exists' => 0
			)
		);
		if (is_array($this->initial_files)) {
			$rocket_file = $this->options['page']['cachedir'] . 'wo.content.php';
			if (!is_file($rocket_file)) {
				$this->write_file($rocket_file, '<?php ?>');
			}
			if ($this->options['css']['rocket'] || $this->options['javascript']['rocket']) {
				@include($rocket_file);
			}
			$remove_list = array(
				'css' => explode(" ", $this->options['css']['remove_list']),
				'script' => explode(" ", $this->options['javascript']['remove_list']),
			);
			foreach($this->initial_files as $key => $value) {
				$k = md5($value['source']);
				if (!empty($webo_scripts[$k])) {
					$this->initial_files[$key]['content'] = $webo_scripts[$k];
				} else {
/* don't touch all files -- just only requested ones */
					if (!$tag || $value['tag'] == $tag) {
						$content_from_file = '';
						if (!empty($value['file'])) {
							$value['file'] = preg_replace("@^/?(\.\./)+@", "", $value['file']);
/* convert dynamic files to static ones */
							if (!preg_match("/\.(css|js)$/is", $value['file']) || strpos($value['file'], 'index.php/')) {
								$dynamic_file = $value['file_raw'];
/* touch only non-external scripts */
								if (!strpos($dynamic_file, "://") && strpos($dynamic_file, '//') !== 0) {
									$dynamic_file = "http://" . $_SERVER['HTTP_HOST'] . $this->convert_path_to_absolute($value['file'], array('file' => $_SERVER['REQUEST_URI']), true);
								}
								$static_file = ($this->options[$value['tag'] == 'script' ? 'javascript' : 'css']['cachedir']) . $this->get_remote_file($this->resolve_amps($dynamic_file), $value['tag']);
								if (@is_file($static_file)) {
									$value['file'] = str_replace($this->options['document_root'], "/", $static_file);
								} else {
									unset($value['file']);
								}
							}
/* remove some files from pages at all */
							if (empty($remove_list[$value['tag']]) || (!in_array(preg_replace("!^.*/!", "", $value['file']), $remove_list[$value['tag']]))) {
								if ($value['tag'] == 'link') {
									$media_array = explode("@media", $this->resolve_css_imports($value['file']));
/* recursively resolve @import in files */
									$content_from_file = (empty($value['media']) ? "" : "@media " . $value['media'] . "{") .
										$media_array[0] .
										(empty($value['media']) ? "" : "}");
/* add the rest, may be erroneous - if @media breaks initial file */
									$content_from_file .= str_replace($media_array[0], "", implode("@media", $media_array));
/* convert CSS images' paths to absolute */
									$content_from_file = $this->convert_paths_to_absolute($content_from_file, array('file' => $value['file']), 0, 1);
								} else {
									$content_from_file = $this->file_get_contents($this->get_file_name($value['file']));
								}
							}
/* detect Shadowbox variables */
							if (strpos($value['file'], 'shadowbox.js') !== false) {
								$this->shadowbox_sizzle = preg_match("@useSizzle:\s*true@is", $content_from_file);
								$this->shadowbox_language = preg_replace("@.*language:\s*['\"]([^'\"]+)['\"].*@is", "$1", $content_from_file);
							}
/* fix niftycube loader */
							if (strpos($value['file'], 'niftycube.js') !== false) {
								$content_from_file = preg_replace("!function AddCss()\{.*?\}!is", "function AddCss(){niftyCss=true}", $content_from_file);
							}
/* remove duplicates */
							if ($value['tag'] == 'script' &&
								$this->options['javascript']['remove_duplicates']) {
									foreach ($duplicates as $k => $duplicate) {
										if (preg_match("@" . $duplicate['regexp'] . "$@is", $value['file'])) {
											if ($duplicate['exists']) {
												$content_from_file = '';
											} else {
												$duplicates[$k]['exists'] = 1;
												continue;
											}
										}
									}
							}
						}
/* remove BOM */
						$content_from_file = str_replace('', '', $content_from_file);
/* don't delete any detected scripts from array -- we need to clean up HTML page from them */
						if (empty($value['file']) && (empty($last_key[$value['tag']]) || $key != $last_key[$value['tag']])) {
/* glue inline and external content */
							if (($this->options['javascript']['inline_scripts'] && $value['tag'] == 'script') || ($this->options['css']['inline_scripts'] && $value['tag'] == 'link')) {
/* resolve @import from inline styles */
								if ($value['tag'] == 'link') {
									$value['content'] = (empty($value['media']) ? "" : "@media " . $value['media'] . "{") .
											$this->resolve_css_imports($value['content'], true) . 
										(empty($value['media']) ? "" : "}");
/* convert CSS images' paths to absolute */
									$value['content'] = $this->convert_paths_to_absolute($value['content'],
										array('file' => $this->options['document_root_relative']), 0, 1);
								} else {
/* fix to merge dynamic Shadowbox files */
									if (!empty($this->shadowbox_base) && preg_match("@players:\s*\[@is", $value['content'])) {
										$players = preg_replace("@.*players:\s*\[([^\]]+)]\s*,\r?\n?.*@is", "$1", $value['content']);
										$value['content'] = str_replace($players, '', $value['content']);
										$players = str_replace(array(" ", "'", '"'), '', $players);
										$players = explode(',', $players);
										$d = $this->options['document_root'] . $this->shadowbox_base_raw;
										$c = '';
										if (!empty($this->shadowbox_sizzle)) {
											$c .= $this->file_get_contents($d . 'libraries/sizzle/sizzle.js');
										}
										if (!empty($this->shadowbox_language)) {
											$c .= $this->file_get_contents($d . 'languages/shadowbox-' . $this->shadowbox_language . '.js');
										}
										foreach ($players as $player) {
											if ($player == 'swf' || $player == 'flv') {
												$c .= $this->file_get_contents($d . 'libraries/swfobject/swfobject.js');
											}
											$c .= $this->file_get_contents($d . 'players/shadowbox-' . $player . '.js');
										}
										$value['content'] = $c . $value['content'];
									}
								}
								$text = (empty($value['content']) ? '' : "\n" . $value['content']);
/* if we can't add to existing tag -- store for the future */
								if (empty($last_key[$value['tag']])) {
									$stored[$value['tag']] = empty($stored[$value['tag']]) ? $text : $stored[$value['tag']] . $text;
									$last_key_flushed[$value['tag']] = $key;
								} else {
									$this->initial_files[$last_key[$value['tag']]]['content'] .= $text;
								}
/* null content not to include anywhere, we still have source code in 'source' */
								$this->initial_files[$key]['content'] = '';
							}
						} elseif (!empty($content_from_file)) {
/* don't rewrite existing content inside script tags */
							$this->initial_files[$key]['content'] = $content_from_file . (empty($value['content']) ? '' : "\n" . $value['content']);
/* add stored content before, but leave styles stored */
							if (!empty($stored[$value['tag']])) {
/* preserve order of merged content */
								if ($last_key_flushed[$value['tag']] < $key) {
									$this->initial_files[$key]['content'] = $stored[$value['tag']] . "\n" . $this->initial_files[$key]['content'];
								} else {
									$this->initial_files[$key]['content'] .= "\n" . $stored[$value['tag']];
								}
								$stored[$value['tag']] = '';
							}
							$last_key[$value['tag']] = $key;
						}
					}
					$need_rewrite = 1;
				}
			}
/* check for stored content and flush it */
			foreach ($stored as $tag => $stored_content) {
				$this->initial_files[$last_key_flushed[$tag]]['content'] = $stored_content;
			}
			if ((($this->options['css']['rocket'] && $value['tag'] == 'link') ||
				($this->options['javascript']['rocket'] && $value['tag'] == 'script')) && !empty($need_rewrite)) {
					$webo_scripts = array();
					foreach ($this->libraries as $klass => $library) {
						if (!class_exists($klass, false)) {
							require_once($this->options['css']['installdir'] . 'libs/php/' . $library);
						}
					}
					foreach ($this->initial_files as $key => $value) {
						$webo_scripts[md5($value['source'])] = $value['tag'] == 'link' ?
							$this->minify_text($value['content'], $this->options['css']) :
							$this->minify_javascript($value['content'], $this->options['javascript']);
					}
					$this->write_file_array($rocket_file, $webo_scripts, 'webo_scripts');
			}
		}
	}

	/**
	* Sets the headers to be sent in the javascript and css files
	*
	**/
	function set_gzip_headers () {
/* define encoding for HTML page */
		$this->set_gzip_encoding();
/* check if content must be gzipped, can't gzip twice via php for flush */
		if ($this->options['page']['gzip'] && !$this->options['page']['flush'] && !$this->nogzip) {
			$this->set_gzip_header();
		}
/* When will the file expire? */
		$offset = 6000000 * 60 ;
		$ExpStr = "Expires: " .
		gmdate("D, d M Y H:i:s",
		$this->time + $offset) . " GMT";
		$types = array("css", "javascript");

		foreach ($types as $type) {
/* Always send etag */
			$this->gzip_header[$type] = '<?php
			// Determine supported compression method
			if (!empty($_SERVER["HTTP_ACCEPT_ENCODING"])) {
				$_SERVER["HTTP_ACCEPT_ENCODING"] = strtolower($_SERVER["HTTP_ACCEPT_ENCODING"]);
				$gzip = strstr($_SERVER["HTTP_ACCEPT_ENCODING"], "gzip") || !empty($_COOKIE["_wo_gzip"]);
				$xgzip = strstr($_SERVER["HTTP_ACCEPT_ENCODING"], "x-gzip");
				$deflate = strstr($_SERVER["HTTP_ACCEPT_ENCODING"], "deflate");
				$xdeflate = strstr($_SERVER["HTTP_ACCEPT_ENCODING"], "x-deflate");
			} elseif (empty($_SERVER["HTTP_ACCEPT_ENCODING"]) && !empty($_COOKIE["_wo_gzip"])) {
				$gzip = 1;
			}
			// Determine used compression method
			$encoding = empty($gzip) ? (empty($xgzip) ? (empty($deflate) ? (empty($xdeflate) ? "none" : "x-deflate") : "deflate") : "x-gzip") : "gzip";
			$hash = "' . $this->time .  '-" . str_replace("x-", "", $encoding);
			@header ("Etag: \"" . $hash . "\"");
?>';
/* Send 304? */
			$this->gzip_header[$type] .= '<?php

			if ((isset($_SERVER["HTTP_IF_NONE_MATCH"]) &&
				stripslashes($_SERVER["HTTP_IF_NONE_MATCH"]) == "\"" . $hash . "\"") ||
				(isset($_SERVER["HTTP_IF_MATCH"]) &&
				stripslashes($_SERVER["HTTP_IF_MATCH"]) == "\"" . $hash . "\"")) {
				// Return visit and no modifications, so do not send anything
				@header ("HTTP/1.0 304 Not Modified");
				@header ("Content-Length: 0");
				exit();
			}

?>';
/* ob_start ("ob_gzhandler"); */
			if (!empty($this->options[$type]['gzip'])) {
				$this->gzip_header[$type] .= '<?php';
				if ($this->options['page']['zlib']) {
					$this->gzip_header[$type] .= '
				$zlib = 0;
				if (strlen(@ini_get("zlib.output_compression_level"))) {
					@ini_set("zlib.output_compression", "On");
					@ini_set("zlib.output_compression_level", ' . $this->options['page']['gzip_level'] . ');
					$zlib = 1;
				}';
				}
				$this->gzip_header[$type] .= '
				ob_start("compress_output_option");
				function compress_output_option($contents) {
					global $encoding, $gzip, $xgzip, $zlib;
					// Check for buggy versions of Internet Explorer
					if (!empty($_SERVER["HTTP_USER_AGENT"]) && !strstr($_SERVER["HTTP_USER_AGENT"], "Opera") &&
						preg_match("/^Mozilla\/4\.0 \(compatible; MSIE ([0-9]\.[0-9])/i", $_SERVER["HTTP_USER_AGENT"], $matches)) {
						$version = floatval($matches[1]);
						// IE6- can loose first 2048 bytes of gzipped content, code from Bitrix
						if ($version < 7) {
							$contents = str_repeat(" ", 2048) . "\r\n" . $contents;
						}
					}

					if (isset($encoding) && $encoding != "none") {
						if (!$zlib) {
							// try to get gzipped content from file
							$extension = $gzip || $xgzip ? "gz" : "df";
							$content = @file_get_contents(__FILE__ . "." . $extension);
							if (get_magic_quotes_runtime()) {
								$content = stripslashes($content);
							}
							$gzipped = 0;
							if (empty($content)) {
							// Send compressed contents
								if ($gzip || $xgzip) {
									if (function_exists("gzencode")) {
										$contents = gzencode($contents, '. $this->options[$type]['gzip_level'] .', FORCE_GZIP);
										$gzipped = 1;
									}
								} else {
									if (function_exists("gzdeflate")) {
										$contents = gzdeflate($contents, '. $this->options[$type]['gzip_level'] .');
										$gzipped = 1;
									}
								}
								if ($gzipped) {
									$fp = @fopen(__FILE__ . "." . $extension, "wb");
									if ($fp) {
										@fwrite($fp, $contents);
										@fclose($fp);
									}
								}
							} else {
								$contents = $content;
								$gzipped = 1;
							}
						}
						if ($gzipped || $zlib) {
							@header ("Content-Encoding: " . $encoding);
						}
						if ($gzipped && !$zlib  && (empty($_SERVER["SERVER_PROTOCOL"]) || $_SERVER["SERVER_PROTOCOL"] == "HTTP/1.0")) {
							@header ("Content-Length: " . strlen($contents));
						}
					}

					return $contents;

				}
?>';
			}

			if (!empty($this->options[$type]['far_future_expires_php'])) {
				$this->gzip_header[$type] .= '<?php
				@header("Cache-Control: private, max-age=315360000");
				@header("' . $ExpStr . '");
?>';
			}

			$this->gzip_header[$type] .= '<?php
				@header("Content-type: text/' . $type . '; charset=' . $this->options['charset'] . '");
?>';

		} // end FE
	}

	/**
	* Returns a path or url without the querystring and anchor
	*
	**/
	function strip_querystring ($path) {
		if ($commapos = strpos($path, '?')) {
			$path = substr($path, 0, $commapos);
		}
		if ($numberpos = strpos($path, '#')) {
			$path = substr($path, 0, $numberpos);
		}		
		return $path;
	}

	/**
	* Minifies CSS - removes unnecessary symbols
	*
	**/
	function minify_text ($txt) {
/* Remove simple comments */
		$txt = preg_replace('!(/\*.*?\*/|^ | $)!is', '', $txt);
/* Remove line breaks, compress whitespaces */
		$txt = preg_replace('![\s\t\r\n]+!', ' ', $txt);
/* Remove spaces for }, {, ;, ,: */
		$txt = str_replace(array(' :', ': ', ' ,', ', ', ' ;', '; ', ' {', '{ ', ' }', '} '), array(':', ':', ',', ',', ';', ';', '{', '{', '}', '}'), $txt);
/* Remove excessive symbols */
		$txt = str_replace(array(' 0px', ':0px', ';}', ':0 0 0 0', ':0.', ' 0.', ', '), array(' 0', ':0', '}', ':0', ':.', ' .', ','), $txt);
		return trim($txt);
	}

	/**
	* Safely trims whitespace from an HTML page
	* Adapted from smarty code http://www.smarty.net/
	**/
	function trimwhitespace ($source) {
		if (!empty($this->options['page']['minify']) ||
			!empty($this->options['page']['unobtrusive_all'])) {
				if (!empty($this->options['page']['html_tidy'])) {
					$_script_blocks = array(array(), array(), array(),
											array(), array(), array());
/* Pull out the script, textarea and pre blocks */
					$this->trimwhitespace_find('<script', '</script>',
						'@@@WBO:TRIM:SCRIPT0@@@', $source, $_script_blocks[0]);
					$this->trimwhitespace_find('<SCRIPT', '</SCRIPT>',
						'@@@WBO:TRIM:SCRIPT1@@@', $source, $_script_blocks[1]);
					$this->trimwhitespace_find('<textarea', '</textarea>',
						'@@@WBO:TRIM:SCRIPT2@@@', $source, $_script_blocks[2]);
					$this->trimwhitespace_find('<TEXTAREA', '</TEXTAREA>',
						'@@@WBO:TRIM:SCRIPT3@@@', $source, $_script_blocks[3]);
					$this->trimwhitespace_find('<pre', '</pre>',
						'@@@WBO:TRIM:SCRIPT4@@@', $source, $_script_blocks[4]);
					$this->trimwhitespace_find('<PRE', '</PRE>',
						'@@@WBO:TRIM:SCRIPT5@@@', $source, $_script_blocks[5]);
				} else {
/* get all scripts */
					preg_match_all("!(<script.*?</script>)!is", $source, $match);
					$_script_blocks = $match[0];
					array_unique($_script_blocks);
					foreach ($_script_blocks as $k => $b) {
						if (strpos($b, 'WEBONOTOPTIMIZE') !== false) {
							unset($_script_blocks[$k]);
						}
					}
					$_script_blocks_to = array();
					$c = count($_script_blocks);
					for ($i = 0; $i < $c; $i++) {
						$_script_blocks_to[] = '@@@WBO:TRIM:SCRIPT' . $i . '@@@';
					}
					$source = str_replace($_script_blocks, $_script_blocks_to, $source);
/* get all textarea / pre */
					preg_match_all("!(<textarea.*?</textarea>|<pre.*?</pre>)!is", $source, $match);
					$_script_blocks_pre = $match[0];
					$_script_blocks_to_pre = array();
					$c1 = count($_script_blocks_pre);
					for ($i = $c; $i < $c + $c1; $i++) {
						$_script_blocks_to_pre[] = '@@@WBO:TRIM:SCRIPT' . $i . '@@@';
					}
					$source = str_replace($_script_blocks_pre, $_script_blocks_to_pre, $source);
				}
		}
/* add multiple hosts or redirects for static images */
		if ((!empty($this->options['page']['parallel']) &&
				!empty($this->options['page']['parallel_hosts'])) ||
			!empty($this->options['page']['far_future_expires_rewrite']) ||
			!empty($this->options['page']['sprites']) ||
			!empty($this->options['page']['scale_images'])) {
				$source = $this->add_multiple_hosts($source,
					explode(" ", $this->options['page']['parallel_hosts']),
					explode(" ", $this->options['page']['parallel_satellites']),
					explode(" ", $this->options['page']['parallel_satellites_hosts']));
		}
/* remove all leading spaces, tabs and carriage returns NOT preceeded by a php close tag */
		if (!empty($this->options['page']['minify'])) {
			$source = trim(preg_replace('/((?<!\?>)\n)[\t\s]+/m', '\1', $source));
/* replace ' >' with '>', remove \r symbols */
			$source = str_replace(array(' >', "\r"), array('>', ''), $source);
		}
/* one-strig-HTML takes about 20-50ms */
		if (!empty($this->options['page']['minify_aggressive'])) {
/* ' />' with '/>' breaks System - Cache in Joomla! */
			$source = str_replace(' />', '/>', $source);
/* replace breaks with nothing for block tags */
			$source = preg_replace("@[\s\t\r\n]*(</?)(!--|!DOCTYPE|address|area|audioscope|base|bgsound|blockquote|body|br|caption|center|col|colgroup|comment|dd|div|dl|dt|embed|fieldset|form|frame|frameset|h[123456]|head|hr|html|iframe|keygen|layer|legend|li|link|map|marquee|menu|meta|noembed|noframes|noscript|object|ol|optgroup|option|p|param|samp|select|sidebar|style|table|tbody|td|tfoot|th|title|tr|ul|var)([\s/][^>]*)?>[\s\t\r\n]+@si", "$1$2$3>", $source);
/* replace breaks with space for inline tags */
			$source = preg_replace("@(</?)(a|abbr|acronym|b|basefont|bdo|big|blackface|blink|button|cite|code|del|dfn|dir|em|font|i|img|input|ins|isindex|kbd|label|q|s|small|span|strike|strong|sub|sup|u)([\s/][^>]*)?>[\s\t\r\n]+@si", "$1$2$3> ", $source);
		}
/* replace multiple spaces with single one 
		$source = preg_replace("/[\s\t\r\n]+/", " ", $source); */
/* replace script, textarea, pre blocks */
		if (!empty($this->options['page']['unobtrusive_all']) ||
			!empty($this->options['page']['minify'])) {
				$before_body = '';
				if (!empty($this->options['page']['html_tidy'])) {
					for ($i = 0; $i < 6; $i++) {
						$_block = $_script_blocks[$i];
						if (count($_block)) {
							$a = $this->trimwhitespace_replace("@@@WBO:TRIM:SCRIPT" . $i . "@@@", $_block, $source);
							$before_body .= $i < 2 ? $a : '';
						}
					}
				} else {
					if (!empty($this->options['page']['unobtrusive_all'])) {
						$before_body .= implode('', $_script_blocks);
						$_script_blocks = array();
					}
					$source = str_replace($_script_blocks_to, $_script_blocks, $source);
					$source = str_replace($_script_blocks_to_pre, $_script_blocks_pre, $source);
				}
/* move all scripts to </body> */
				if (!empty($before_body)) {
					if ($this->premium > 1) {
						$before_body = '<!--noindex-->' . $before_body . '<!--/noindex-->';
					}
					if (!empty($this->options['page']['html_tidy']) &&
						($bodypos = strpos($source, "</body>"))) {
							$source = substr_replace($source,
								$before_body, $bodypos, 0);
					} elseif (!empty($this->options['page']['html_tidy']) &&
						($bodypos = strpos($this->content, "</BODY>"))) {
							$source = substr_replace($source,
								$before_body, $bodypos, 0);
					} else {
/* a number of engines doesn't set </body> */
						if (!preg_match('@</body>@is', $source)) {
							$source .= $before_body;
						} else {
							$source = preg_replace('@(</body>)@is',
								$before_body . "$1", $source);
						}
					}
				}
		}
/* remove website host */
		if (!empty($this->options['page']['minify_aggressive'])) {
/* fix for base tag */
			preg_match_all("@<base[^>]+>@is", $source, $matches);
			$basetag = false;
			if (count($matches) && count($matches[0])) {
				$basetag = $matches[0][0];
			}
			if ($basetag) {
				$source = str_replace($basetag, '@@@WSSBASE@@@', $source);
			}
			$source = preg_replace("@(src|href)=(['\"])(http" .
				$this->https . "://)(www\.)?" .
				$this->host . "/*@", "$1=$2/", $source);
			if ($basetag) {
				$source = str_replace('@@@WSSBASE@@@', $basetag, $source);
			}
		}
		return $source;
	}

	/**
	* Helper function for trimwhitespace, finds all blocks
	*
	**/
	function trimwhitespace_find ($block_begin, $block_end, $spot, &$subject, &$return) {
		$len = strlen($block_end);
		while ($posbegin = strpos($subject, $block_begin)) {
			if ((($posend = strpos($subject, $block_end)) !== false) && ($posend > $posbegin)) {
				$return[] = substr($subject, $posbegin, $posend - $posbegin + $len);
				$subject = substr_replace($subject, $spot, $posbegin, $posend - $posbegin + $len);
			} else {
				break;
			}
		}
	}

	/**
	* Helper function for trimwhitespace
	*
	**/
	function trimwhitespace_replace ($search_str, $replace, &$subject) {
		$_len = strlen($search_str);
		$_pos = 0;
		$_to_body = '';
		for ($_i=0, $_count = count($replace); $_i<$_count; $_i++) {
			if (($_pos = strpos($subject, $search_str, $_pos)) !== false) {
/* move scripts to </body>. Skip dynamic styles loader */
				if (!empty($this->options['page']['unobtrusive_all']) &&
					!strpos($replace[$_i], '\x3c!--')) {
					if ((!empty($this->options['html_tidy']) &&
							(strpos($replace[$_i], '<script') ||
							strpos($replace[$_i], '<SCRIPT'))) ||
						preg_match("@<script@is", $replace[$_i])) {
							$_to_body .= $replace[$_i];
							$replace[$_i] = '';
					}
				}
				if (strpos($replace[$_i], 'WEBONOTOPTIMIZE') === false) {
					$subject = substr_replace($subject, $replace[$_i], $_pos, $_len);
				}
			} else {
				break;
			}
		}
		return $_to_body;
	}

	/**
	* Replaces one JS code in HTML with another
	* Returns string to place before </body>
	*
	**/
	function replace_unobtrusive_generic ($match_string, $stuff, $height = 0, $width = 0, $inline = false, $onload_mask = false, $onload_result = false) {
		$return = '';
		$initial_height = empty($height) ? 0 : $height;
		$initial_width = empty($width) ? 0 : $width;
		$onload = !empty($this->options['page']['unobtrusive_onload']) &&
			$onload_mask && $onload_result;
		preg_match_all($match_string, $this->content, $matches, PREG_SET_ORDER);
		if (!empty($matches)) {
			foreach ($matches as $key => $value) {
/* skip marked unobtrusive items */
				if (!count($this->options['page']['unobtrusive_configuration']) ||
					empty($this->options['page']['unobtrusive_configuration'][$stuff]) ||
					$key >= $this->options['page']['unobtrusive_configuration'][$stuff]) {
					$height = $initial_height;
					$width = $initial_height;
					if (empty($height) || empty($width)) {
/* try to calculate height for AdWords */
						switch ($stuff) {
							case 'gw':
								$height = round(substr($value[0], strpos($value[0], 'google_ad_height =') + 18, 5));
								$width = round(substr($value[0], strpos($value[0], 'google_ad_width =') + 18, 5));
								break;
							case 'aa':
								$height = round(substr($value[0], strpos($value[0], 'amazon_ad_height = "') + 20, 5));
								$width = round(substr($value[0], strpos($value[0], 'amazon_ad_width = "') + 20, 5));
								break;
							case 'cp':
								$pos = strpos($value[0], 'thumb_size:') + 11;
								$posend = strpos($value[0], ',', $pos);
								$dims = explode('x', str_replace(array("'", " ", '"'), array(), substr($value[0], $pos, $posend)));
								$width = round($dims[0]);
								$height = round($dims[1]);
								break;
							case 'if':
							case 'IF':
								if (preg_match("@height\s*=@is", $value[0])) {
									$height = round(preg_replace("@.*height\s*=[\s'\"](.*)[\s'\"]@", "$1", $value[0]));
								}
								if (preg_match("@width\s*=@is", $value[0])) {
									$height = round(preg_replace("@.*width\s*=[\s'\"](.*)[\s'\"]@", "$1", $value[0]));
								}
								break;
						}
					}
/* count param for str_replace available only in PHP5 */
					$pos = strpos($this->content, $value[0]);
					$len = strlen($value[0]);
					$tag = $inline ? 'span' : 'div';
					$this->content = substr_replace($this->content,
						($stuff == 'fc' ? '<?xml:namespace prefix="fb"/>' : '') .
						'<' .
							$tag .
						' id="' .
							$stuff .
						'_dst_' .
							$key .
						'"' .
							($height && $inline ? ' style="'.
							($onload ? 'position:relative;' : '') .
							'height:' .
								$height .
							'px;width:' .
								$width .
							'px;display:inline-block"' : '') .
							($height && !$inline ? ' style="'.
							($onload ? 'position:relative;margin:0 auto;' : '') .
							'height:' .
								$height .
							'px;width:' .
								$width .
							'px"' : '') .
						'></' .
							$tag .
						'>', $pos, $len);
					if (!$onload) {
						$return .= '<' .
							$tag .
						' id="'.
							$stuff .'_src_' . $key . 
						'">' .
							$value[0] .
						'</' .
							$tag .
						'><script type="text/javascript">//<![CDATA[' . "\n" . '(function(){var a=document,b=a.getElementById("' .
							$stuff . '_dst_' . $key . '"),c=b.parentNode,d=a.getElementById("' .
							$stuff . '_src_' . $key . '");if(c===a.body){c.insertBefore(d,b);c.removeChild(b)}else{c.innerHTML=c.innerHTML.replace(/\x3c' .
							$tag .
						'[^>]+id="?' .
							$stuff .
						'_dst_' .
							$key .
						'["\s>].*?\x3c\/' . 
							$tag .
						'>/i,d.innerHTML);b=a.getElementById("' .
							$stuff . '_src_' . $key . '");b.parentNode.removeChild(b)}}())' . "\n//]]></script>";
					} else {
						$return .= '<script type="text/javascript">//<![CDATA[' . "\n" . 'wss_onload[wss_onload.length]=function(){wss_parentNode=document.getElementById(\'' .
							$stuff . '_dst_' . $key
						.'\');' .
							str_replace(array("\n", "\r", '###WSS###', '<div', '</div', '// ]]>'),
								array(' ', '', $key, '\x3cdiv', '\x3c/div', ''),
								preg_replace("@(<!--.*?-->|/\*.*?\*/)@is", "", preg_replace("@" . $onload_mask . "@is",
								$onload_result, $value[0]))) .
							"}\n//]]></script>";
					}
				}
			}
		}
		return $return;
	}

	/**
	* Moves all known informers before </body>
	* Also handles counters and ads
	* Leaves placeholders for them in content
	*
	**/
	function replace_informers ($options) {
		if (count($this->options['page']['unobtrusive_configuration'])) {
			$b = $this->options['page']['unobtrusive_configuration'];
			$conf = array();
			foreach ($b as $skip) {
				$a = explode(":", $skip);
				$conf[$a[0]] = $a[1];
			}
			$this->options['page']['unobtrusive_configuration'] = $conf;
		}
		$before_body = '';
		$host = (empty($this->options['javascript']['host']) ?
			$this->options['page']['host'] :
			$this->options['javascript']['host']);
		$before_body_onload = empty($this->options['page']['unobtrusive_onload']) ?
			'' : (empty($this->options['page']['unobtrusive_inline']) ?
				'<script type="text/javascript" src="' .
				 (empty($host) ? '' : '//' . $host) .
				(empty($this->options['javascript']['far_future_expires_static']) ?
				'' : $this->options['page']['cachedir_relative'] .
				'wo.' . ($this->options['javascript']['gzip'] ? 'gzip' : 'static') . '.php?') .
				$this->options['javascript']['cachedir_relative'] .
				'yass.loader.js"></script>' :
				'<script type="text/javascript">//<![CDATA[' . "\n" . '(function(){function j(a){var b={};a=a.split(",");for(var g=0;g<a.length;g++)b[a[g]]=true;return b}var o=document,h;o.write=function(a){h=wss_parentNode||document.body;new x(a,{start:function(b,g,k){b=o.createElement(b);for(var d=0;d<g.length;d++)b.setAttribute(g[d].name,g[d].value.replace(/&gt;/g,">").replace(/&lt;g/,"<").replace(/&amp;/g,"&"));h.appendChild(b);k||(h=b)},end:function(){h=h.parentNode},chars:function(b){switch(h.nodeName.toLowerCase()){case"script":b&&eval(b);break;case"style":b&&h.appendChild(o.createTextNode(b));break;default:if(b){h.innerHTML+=b};break}},comment:function(b){h.appendChild(o.createComment(b))}})};var r=/^<(\w+)((?:\s+\w+(?:\s*=\s*(?:(?:"[^"]*")|(?:\'[^\']*\')|[^>\s]+))?)*)\s*(\/?)>/,s=/^<\/(\w+)[^>]*>/,y=/(\w+)(?:\s*=\s*(?:(?:"((?:\\\\\\\\.|[^"])*)")|(?:\'((?:\\\\\\\\.|[^\'])*)\')|([^>\s]+)))?/g,z=j("area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed"),A=j("address,applet,blockquote,center,dd,div,dl,dt,fieldset,form,frameset,hr,iframe,isindex,li,map,menu,noframes,noscript,object,ol,p,pre,script,table,tbody,td,tfoot,th,thead,tr,ul"),B=j("a,abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,textarea,tt,u,var"),C=j("colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr"),D=j("checked,compact,declare,defer,disabled,ismap,multiple,nohref,noresize,noshade,nowrap,readonly,selected"),E=j("script,style"),x=function(a,b){function g(m,f,e,i){if(A[f])for(;c.last()&&B[c.last()];)k("",c.last());C[f]&&c.last()==f&&k("",f);(i=z[f]||!!i)||c.push(f);if(b.start){var t=[];e.replace(y,function(p,q,u,v,w){p=u?u:v?v:w?w:D[q]?q:"";t.push({name:q,value:p,escaped:p.replace(/(^|[^\\\\\\\\])"/g,\'$1\\\\\\\\"\')})});b.start&&b.start(f,t,i)}}function k(m,f){if(f)for(e=c.length-1;e>=0;e--){if(c[e]==f)break}else var e=0;if(e>=0){for(var i=c.length-1;i>=e;i--)b.end&&b.end(c[i]);c.length=e}}var d,n,l,c=[];c.last=function(){return this[this.length-1]};this.parse=function(m){for(last=a=m;a;){n=true;if(!c.last()||!E[c.last()]){if(a.indexOf("\\\\x3C!--")==0){d=a.indexOf("--\>");if(d>=0){b.comment&&b.comment(a.substring(4,d));a=a.substring(d+3);n=false}}else if(a.indexOf("</")==0){if(l=a.match(s)){a=a.substring(l[0].length);l[0].replace(s,k);n=false}}else if(a.indexOf("<")==0)if(l=a.match(r)){a=a.substring(l[0].length);l[0].replace(r,g);n=false}if(n){d=a.indexOf("<");m=d<0?a:a.substring(0,d);a=d<0?"":a.substring(d);b.chars&&b.chars(m)}}else{a=a.replace(new RegExp("(.*)</"+c.last()+"[^>]*>"),function(f,e){e=e.replace(/\\\\x3C!--(.*?)--\>/g,"$1").replace(/<!\[CDATA\[(.*?)]]\>/g,"$1");b.chars&&b.chars(e);return""});k("",c.last())}if(a&&a==last)throw"Parse Error: "+a;last=a}};this.parse(a)}})();' . "\n//]]></script>") .
				'<script type="text/javascript">//<![CDATA[' . "\n" . 'wss_onload=[]' . "\n//]]></script>";
		require($options['installdir'] . 'libs/php/config.unobtrusive.php');
/* convert vKontakte to async load */
		if (!empty($options['unobtrusive_informers']) && strpos($this->content, 'vkAsyncInit') === false && strpos($this->content, 'VK.') !== false) {
			preg_match_all("!VK\.[^\)]+\);!s", $this->content, $matches, PREG_SET_ORDER);
			$vk = '';
			$replace_from = array();
			foreach ($matches as $match) {
				$vk .= $match[0];
				$replace_from[] = $match[0];
			}
			if ($vk) {
				$before_body .= '<script type="text/javascript">//<![CDATA[' . "\n" . 'window.vkAsyncInit=function(){' . $vk . '};window[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"load",vkAsyncInit,false)' . "\n//]]></script>";
				$this->content = str_replace($replace_from, '', $this->content);
			}
		}
		if (is_array($unobtrusive_items)) {
			foreach ($unobtrusive_items as $group => $items) {
				if (!empty($options[$group])) {
					foreach ($items as $key => $item) {
						if (strpos($this->content, $item['marker'])) {
							$before = $this->replace_unobtrusive_generic("@" . $item['regexp'] . "@is",
								$key, empty($item['height']) ? 0 : $item['height'],
								empty($item['width']) ? 0 : $item['width'],
								empty($item['inline']) ? false : $item['inline'],
								empty($item['onload_before']) ? false : $item['onload_before'],
								empty($item['onload_after']) ? false : $item['onload_after']);
/* switch between window.onload and onDOMready handlers */
							if (!empty($item['onload_before']) && !empty($item['onload_after'])) {
								$before_body_onload .= $before;
							} else {
								$before_body .= $before;
							}
						}
					}
				}
			}
		}
		$before_body .= $before_body_onload;
		$onload = $onload_func = '';
		$onload .= empty($this->options['page']['unobtrusive_onload']) && empty($this->options['page']['postload']) && empty($this->options['page']['postload_frames']) ? '' : 'wss_onload_ready=1;window[/*@cc_on!@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"load",function(){';
		$onload_func .= empty($this->options['page']['unobtrusive_onload']) ? '' : 'wss_onload_counter=0;setTimeout(function(){var a=wss_onload[wss_onload_counter];if(wss_onload_ready){wss_onload_ready=0;if(a){a()}wss_onload_counter++}if(a){setTimeout(arguments.callee,10)}},10);';
		$onload_func .= empty($this->options['page']['postload']) ? '' : 'var a=0,b,c,d=["' .
			str_replace(" ", '","', $this->options['page']['postload']) .
			'"],e=navigator.appName.indexOf("Microsoft")===0,f=document;while(b=d[a++]){b=b.indexOf("//")==-1?"//"+b:b;if(e){new Image().src=b}else{c=f.createElement("object");c.data=b;c.width=c.height=0;f.body.appendChild(c)}};';
		$onload_func .= empty($this->options['page']['postload_frames']) ? '' : 'var a=0,b,c,d=["' .
			str_replace(" ", '","', $this->options['page']['postload_frames']) .
			'"],f=document;while(b=d[a++]){b=b.indexOf("//")==-1?"//"+b:b;c=f.createElement("iframe");c.style.display="none";c.src=b;f.body.appendChild(c)};';
		$onload_func .= $this->options['css']['rocket'] || $this->options['javascript']['rocket'] ? 'document.cookie="WSS_ROCKET=1;path=/;expires="+(new Date(new Date().getTime()+31536000).toGMTString());' : '';
		if ($onload) {
			$before_body .= '<script type="text/javascript">//<![CDATA['. "\n" . $onload . $onload_func . "},false)\n//]]></script>";
		}
		if (!empty($before_body)) {
			if ($this->premium > 1) {
				$before_body = '<!--noindex-->' . $before_body . '<!--/noindex-->';
			}
			if (!empty($options['html_tidy']) && ($bodypos = strpos($this->content, '</body>'))) {
				$this->content = substr_replace($this->content, $before_body, $bodypos, 0);
			 } elseif (!empty($options['html_tidy']) && ($bodypos = strpos($this->content, '</BODY>'))) {
				$this->content = substr_replace($this->content, $before_body, $bodypos, 0);
			 } else {
				if (preg_match('@</body>@is', $this->content)) {
					$this->content = preg_replace('@</body>@i', $before_body . "$0" , $this->content);
				} else {
/* a number of engines doesn't set </body> */
					$this->content .= $before_body;
				}
			 }
		}
	}

	/**
	* Removes all secondary stuff from HTML code
	*
	**/
	function prepare_html ($source, $cssonly = false) {
		$dest = $source;
/* remove conditional comments for current browser */
		$dest = $this->remove_conditional_comments($dest);
/* remove comments from <style> constructions */
		if (!empty($this->options['css']['inline_scripts'])) {
			$dest = preg_replace("@(<style type=[\"']text/css[^>]*>)[\t\s\r\n]*<!--(\/\*--><!\[CDATA\[\/\*><!--\*\/)?@is", "$1", $dest);
			$dest = preg_replace("@([\t\s\r\n]*-->|\/\*\]\]>\*\/-->\r?\n?)(</style>)@is", "$2", $dest);
		}
/* Pull out the comment blocks to avoid touching conditional comments,
	and some semi-standard complaint hacks, skip if we fetch body but not head */
		if (!empty($this->options['javascript']['inline_scripts']) && !$cssonly) {
			$dest = str_replace(
				array('//]]>', '// ]]>', '<!--//-->',
					'<![CDATA[', '//><!--', '//--><!]]>', '//-->',
					'<!--/*--><![CDATA[//><!--','//-->', '//<!--',
					'// <!--', '<!-- // -->', '<!--/*-->', '// -->',
					'/* ]]> */'), '', $dest);
			$dest = preg_replace("@(<script[^>]*>)[\r\n\t\s]*<!--@is", "$1", $dest);
			$dest = preg_replace("@-->[\r\n\t\s]*(</script>)@is", "$1", $dest);
		}
		if ($dest !== $source) {
/* replace current content with updated version */
			$this->content = str_replace($source, $dest, $this->content);
		}
/* and now remove all comments and parse result code -- to avoid IE code mixing with other browsers */
		$dest = preg_replace("@<!--.*?-->@is", '', $dest);
		return $dest;
	}

	/**
	* Gets the head (and body) part(s) of the HTML document
	*
	**/
	function get_head () {
		if (empty($this->head) && empty($this->body)) {
/* try to define base URI for the document */
			if ($this->options['page']['html_tidy']) {
				if (($basepos = strpos($this->content, '<base')) || ($basepos = strpos($this->content, '<BASE'))) {
					$basepos = strpos($this->content, 'href=', $basepos);
					if (!$basepos) {
						$basepos = strpos($this->content, 'HREF=', $basepos);
					}
					$baseend = strpos($this->content, '>', $basepos);
					if ($this->content{$baseend-1} === '/') {
						$baseend--;
					}
					$this->basehref = trim(str_replace(array('"', ""), array(), substr($this->content, $basepos + 5, $baseend - $basepos - 6)));
				}
			} elseif (preg_match("@<base\s+href@is", $this->content)) {
				$this->basehref = preg_replace("@^.*?<base\s+href\s*=\s*['\"](.*?)['\"].*$@is", "$1", $this->content);
			}
			if (!empty($this->basehref)) {
				$this->basehref_url = preg_replace("@^((https?:)?//[^/]+).*$@is", "$1", $this->basehref);
				$this->basehref_url = preg_replace("@https?://(www\.)?" . $this->host . "@", "", $this->basehref_url);
				$this->basehref = preg_replace("@https?://(www\.)?" . $this->host . "@", "", $this->basehref);
				$this->basehref = $this->basehref ? $this->basehref : '/';
			}
/* change all links on the page according to DEBUG mode */
			if ($this->debug_mode) {
/* don't touch content inside <script> */
				$c = preg_replace("!<script[^>]*>.*?</script>!is", "", $this->content);
				preg_match_all("!(<a[^>]+href\s*=\s*['\"])([^\?]*?)(\?(.+?))?(['\"])!is", $c, $m, PREG_SET_ORDER);
				foreach ($m as $match) {
/* skip javascript: etc links */
					if (!preg_match('!^((javascript|mailto|skype):|#)!i', $match[2]) && (preg_match('!^/[^/]*!', $match[2]) || preg_match('!https?://(www\.)?' . $this->host_escaped . '/!i', $match[2]) || preg_match('!^[^:/][^:]+$!', $match[2]))) {
						$this->content = str_replace($match[0], $match[1] . $match[2] . ($match[3] ? $match[3] . '&amp;' : '?') . 'web_optimizer_debug=1' . $match[5], $this->content);
					}
				}
			}
/* Remove comments ?*/
			if (!empty($this->options['page']['remove_comments'])) {
				$added = $this->premium > 1 ? '' : '|(<\!--/?noindex-->)';
/* skip removing escaped JavaScript code, thx to smart */
				preg_match_all("!((<script[^>]*>.*?</script>)|(<style[^>]*>.*?</style>)|(<\!--\[.*?<\!\[endif\]-->)" . $added . ")!is", $this->content, $matches, PREG_SET_ORDER);
				$i = 0;
				$to_store = array();
				$stubs = array();
				foreach ($matches as $match) {
					$to_store[] = $match[0];
					$stubs[] = '@@@WSSLEAVE' . $i . '@@@';
					$i++;
				}
				$this->content = str_replace($to_store, $stubs, $this->content);
				$this->content = preg_replace("@<!--.*?-->@is", '', $this->content);
				$this->content = str_replace($stubs, $to_store, $this->content);
			}
/* fix Shadowbox inclusions */
			if (($this->options['javascript']['minify'] || $this->options['css']['minify']) && strpos($this->content, 'Shadowbox.load')) {
				$this->content = preg_replace("@Shadowbox.loadSkin\(['\"](.+?)['\"]\s*,\s*['\"](.+?)['\"]\);@is", "</script><link rel=\"stylesheet\" type=\"text/css\" href=\"$2/$1/skin.css\"><script type=\"text/javascript\" src=\"$2/$1/skin.js\"></script><script type=\"text/javascript\">", $this->content);
				$this->content = preg_replace("@Shadowbox.loadLanguage\(['\"](.+?)['\"]\s*,\s*['\"](.+?)['\"]\);@is", "</script><script type=\"text/javascript\" src=\"$2/shadowbox-$1.js\"></script><script type=\"text/javascript\">", $this->content);
				preg_match_all("@Shadowbox.loadPlayer\(\[([^\]]+?)\]\s*,\s*['\"](.*?)['\"]\);@", $this->content, $matches, PREG_SET_ORDER);
				foreach ($matches as $match) {
					$inclusion = '</script>';
					$players = explode(",", $match[1]);
					foreach ($players as $player) {
						$player = str_replace(array('\'', '"', ' '), '', $player);
						$inclusion .= "<script type=\"text/javascript\" src=\"" .
							$match[2] .
							"/shadowbox-" .
							$player .
							".js\"></script>";
					}
					$this->content = str_replace($match[0], $inclusion . "<script type=\"text/javascript\">", $this->content);
				}
			}
/* skip parsing head if we include both CSS and JavaScript from head+body */
			if (empty($this->options['javascript']['minify_body']) ||
				empty($this->options['css']['minify_body']) ||
				empty($this->options['javascript']['inline_scripts_body'])) {
					if (empty($this->options['page']['html_tidy'])) {
						preg_match("!<head[^>]*>.*?<body!is",
							$this->content, $matches);
						$head = $matches[0];
					} else {
						if ($headpos = strpos($this->content, '<head')) {
							$head = substr($this->content, $headpos,
								strpos($this->content, '</head>') - $headpos);
						} elseif ($headpos = strpos($this->content, '<HEAD')) {
							$head = substr($this->content, $headpos,
								strpos($this->content, '</HEAD>') - $headpos);
						}
					}
					if (!empty($head)) {
						$this->head = $this->prepare_html($head);
					}
			}		
/* get head+body if required */
			if ($this->options['javascript']['minify_body'] + $this->options['css']['minify_body'] + $this->options['javascript']['inline_scripts_body']) {
				preg_match("!<head.*!is", $this->content, $matches);
				if (!empty($matches[0])) {
					$this->body = $this->prepare_html($matches[0], empty($this->options['javascript']['minify_body']));
				}
			}
			$xhtml = strpos($this->content, 'XHTML');
/* split XHTML behavior from HTML */
			$this->xhtml = $xhtml > 34 && $xhtml < 100;
/* add WEBO Site SpeedUp spot */
			if (!empty($this->options['page']['spot'])) {
				$this->content .= '<!--WSS-->';
			}
/* add info about client side load speed */
			if ($this->debug_mode) {
				$this->content = preg_replace("@(<head([^e][^>]*>|>))@is", "$1" .
					"<script type=\"text/javascript\">//<![CDATA[\n" .
					(empty($this->options['page']['counter']) ? '__WSS=(new Date()).getTime();' : '') .
					"window[/*@cc_on !@*/0?'attachEvent':'addEventListener'](/*@cc_on 'on'+@*/'load',function(){__WSS=(new Date()).getTime()-__WSS},false);window.onerror=function(){window.__WSSERR=(typeof window.__WSSERR!=='undefined'?window.__WSSERR:0)+1;return false}\n//]]></script>", $this->content);
			}
			$stamp = '';
			if (!empty($this->options['page']['sprites']) && empty($this->options['css']['minify']) && empty($this->options['javascript']['minify'])) {
				$stamp .= '@@@WSSREADY@@@';
			}
/* add WEBO Site SpeedUp stamp */
			if (!empty($this->options['page']['footer'])) {
				$style = empty($this->options['page']['footer_style']) ? '' :
					' style="' . $this->options['page']['footer_style'] . '"';
				$title = empty($this->options['page']['footer_text']) ? '' :
					' title="' . $this->options['page']['footer_text'] . '"';
				$text = empty($this->options['page']['footer_text']) ||
					!empty($this->options['page']['footer_image']) ? '' : $this->options['page']['footer_text'];
/* place or not image? */
				if (empty($this->options['page']['footer_image'])) {
					$background_image = $background_style = '';
				} else {
					$background_image = $this->options['css']['cachedir_relative'] . $this->options['page']['footer_image'];
					$image_style =
						'display:block;text-decoration:none;width:100px;height:100px;';
					if (in_array($this->ua_mod, $this->ies)) {
						$background_style = $image_style . 
							'filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=' .
								$background_image .
							',sizingMethod=\'scale\')';
					} else {
						$background_style = $image_style . 
							'background:url(' .
								$background_image .
							')';
					}
					$background_style = ' style="' . $background_style . '"';
				}
/* choose between link or span */
				if (empty($text)) {
					$el = 'a href="http://www.webogroup.com/" rel="nofollow"';
					$el_close = 'a';
				} else {
					$el = $el_close = 'span';
				}
/* finally from stamp */
				$stamp .= '<div' .
						$style .
					'><' .
						$el .
						$title .
						$background_style .
					'>'.
						$text .
					'</' .
						$el_close .
					'></div>';
			}
/* add WEBO Site SpeedUp page load counter, ideas from
http://www.optimisationbeacon.com/analytics/track-page-load-times-with-google-analytics-asynchronous-script/
http://www.panalysis.com/tracking-webpage-load-times.php
 */
			if (!empty($this->options['page']['counter'])) {
				$stamp .= '<script type="text/javascript">//<![CDATA[' . "\n" . '(function(){window[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"load",function(){var a=0,c=document.location;if(typeof _gat!=="undefined"){a=_gat._getTracker("'.
					$this->options['page']['counter'] .
					'")}if(typeof _gaq!=="undefined"){a=_gaq._getAsyncTracker();a._setAccount("'.
					$this->options['page']['counter'] .
					'")}if(a){b=(new Date()).getTime()-__WSS;a._trackEvent("Page Load Time (WEBO)",50*Math.round(b/50)+"ms",c.pathname+c.search,b)}},false)})()' . "\n//]]></script>";
			}
/* Add script to check gzip possibility */
			if (!empty($options['gzip_cookie']) && empty($_COOKIE['_wo_gzip_checked']) && empty($_SERVER['HTTP_ACCEPT_ENCODING'])) {
				$stamp .= '<script type="text/javascript" src="' . $options['cachedir_relative'] . 'index.php"></script>';
			}
			if ($stamp) {
				if ($this->premium > 1) {
					$stamp = '<!--noindex-->' . $stamp . '<!--/noindex-->';
				}
				if ($this->options['page']['html_tidy'] &&
					($bodypos = strpos($this->content, '</body>'))) {
						$this->content = substr_replace($this->content,
							$stamp, $bodypos, 0);
				} elseif ($this->options['page']['html_tidy'] &&
					($bodypos = strpos($this->content, '</BODY>'))) {
						$this->content = substr_replace($this->content,
							$stamp, $bodypos, 0);
				} else {
					$this->content = preg_replace("@</body>@i",
						$stamp . "$0", $this->content);
/* a number of engines doesn't set </body> */
					if (!strpos($this->content, $stamp)) {
						$this->content .= $stamp;
					}
				}
			}
		}
	}

	/**
	* Removes conditional comments for MSIE 5-9
	*
	**/
	function remove_conditional_comments ($source) {
		if (!empty($this->ua_mod)) {
/* preliminary strpos saves about 50% of CPU */
			if (strpos($source, 'IE]>') !== false) {
				$source = preg_replace("@<!--\[if \(?IE\)?\]>(.*?)<!\[endif\]-->@s", "$1", $source);
			}
			for ($version = $this->min_ie_version; $version < $this->max_ie_version; $version++) {
/* detect */
				if ($this->ua_mod == ".ie" . $version) {
/* detect equality */
					if (strpos($source, 'IE ' . $version . ']>') !== false) {
						$source = preg_replace("@<!--\[if ((gte|lte) )?\(?IE " . $version . "[^\]]*\)?\]>(.*?)<!\[endif\]-->@s", "$3", $source);
					}
/* detect lesser versions */
					for ($i = $this->min_ie_version; $i < $version; $i++) {
						if (strpos($source, 'IE ' . $i . ']>') !== false) {
							$source = preg_replace("@<!--\[if gte? IE " . $i . "[^\]]*\]>(.*?)<!\[endif\]-->@s", "$1", $source);
						}
					}
/* detect greater versions */
					for ($i = $version + 1; $i < $this->max_ie_version; $i++) {
						if (strpos($source, 'IE ' . $i . ']>') !== false) {
							$source = preg_replace("@<!--\[if lte? IE " . $i . "[^\]]*\]>(.*?)<!\[endif\]-->@s", "$1", $source);
						}
					}
				}
			}
			if (!empty($this->options['plain_string'])) {
				while (($a = strpos($source, '<!--[if')) !== false && ($b = strpos($source, '[endif]-->')) !== false) {
					$source = substr($source, 0, $a) . substr($source, $b+10);
				}
			} else {
				$source = preg_replace("@<!--\[if.*?\[endif\]-->@s", "", $source);
			}
		} elseif (!$this->options['uniform_cache']) {
			if (!empty($this->options['plain_string'])) {
				while ((($a = strpos($source, '<!--[if IE')) !== false || ($a = strpos($source, '<!--[if lt')) !== false || ($a = strpos($source, '<!--[if gt')) !== false) && ($b = strpos($source, '[endif]-->')) !== false) {
					$source = substr($source, 0, $a) . substr($source, $b+10);
				}
			} else {
				$source = preg_replace("@<!--\[if ((lt|gt)e? )?IE.*?\[endif\]-->@s", "", $source);
			}
		}
		return $source;
	}

	/**
	* Converts sinlge path to the absolute one
	*
	**/
	function convert_path_to_absolute ($file, $path, $leave_querystring = false, $css_images = false) {
		$endfile = '';
		$root = $this->options['document_root'];
		if (!empty($path['file'])) {
			$endfile = $path['file'];
		}
		if (!$leave_querystring) {
			$file = $this->strip_querystring($file);
			$endfile = $this->strip_querystring($endfile);
		}
/* Don't touch data URIs, or mhtml:, or external files */
		if (preg_match("!^(https?|data|mhtml):!is", $file) && !preg_match("@//(www\.)?". $this->host_escaped ."@is", $file)) {
			return false;
		}
		$absolute_path = $file;
/* external source file */
		if (preg_match("!^https?://!", $endfile) && !preg_match("!^https?://!", $file)) {
			if (substr($file, 0, 1) != '/') {
				$absolute_path = preg_replace("@[^\/]+$@", "", $endfile) . $absolute_path;
			} else {
				$absolute_path = preg_replace("@(https?://[^\/]+).*@", "$1", $endfile) . $absolute_path;
			}
		} else {
/* Not absolute or external */
			if (substr($file, 0, 1) != '/' && !preg_match("!^https?://!", $file)) {
/* add base */
				if (!empty($this->basehref) && !$css_images) {
					$absolute_path = $this->view->unify_dir_separator($this->basehref . $file);
				} else {	
/* add relative directory */
					if (substr($endfile, 0, 1) != "/" && !preg_match("!^https?://!", $endfile)) {
						$endfile = preg_replace("@([^\?&]*/).*@", "$1", $_SERVER['REQUEST_URI']) . $endfile;
					}
					$full_path_to_image = preg_replace("@[^/\\\]+$@", "", $endfile);
					$absolute_path = $this->view->unify_dir_separator($full_path_to_image . $file);
				}
			} elseif ($endfile && substr($endfile, 0, 1) != "/" && !preg_match("!^https?://!", $endfile)) {
				$absolute_path = $this->view->unify_dir_separator(preg_replace("@[^/\\\]+$@", "", $file) . $endfile);
			}
		}
		$apath_stripped = $this->strip_querystring($absolute_path);
		$query = str_replace($apath_stripped, "", $absolute_path);
		$correct_path = strpos(realpath($root . $apath_stripped), $root) !== false ?
			str_replace($root, "/", str_replace('\\', '/', realpath($root . $apath_stripped))) :
			str_replace('\\', '/', $apath_stripped);
/* remove HTTP host from absolute URL */
		return strpos($absolute_path, "http") !== false || strpos($absolute_path, "HTTP") !== false ?
			preg_replace("!https?://(www\.)?". $this->host_escaped ."/+!i", "/", $absolute_path) :
			$correct_path . $query;
	}

	/**
	* Finds background images in the CSS and converts their paths to absolute
	*
	**/
	function convert_paths_to_absolute ($content, $path, $leave_querystring = false, $css_images = false) {
		preg_match_all("!url\s*\(\s*['\"]?(.*?)['\"]?\s*\)!is", $content, $matches);
		if(count($matches[1]) > 0) {
			foreach($matches[1] as $file) {
				if (strpos($file, '.eot?') || strpos($file, '.svg#')) {
					$leave_querystring = true;
				}
				$absolute_path = $this->convert_path_to_absolute($file, $path, $leave_querystring, $css_images);
				if (!empty($absolute_path)) {
/* add quotes if there is not plain URL */
					if (strpos($absolute_path, ' ')) {
						$absolute_path = "'" . $absolute_path . "'";
					}
/* replace path in initial CSS */
					$content = preg_replace("@url\s*\(\s*['\"]?" .
						str_replace("?", "\?", $file) .
						"['\"]?\s*\)@is", "url(" . $absolute_path . ")", $content);
				}
			}
		}
/* AlphaImageLoader */
		if (strpos($content, 'src=') !== false) {
			preg_match_all("!src=['\"](.*?)['\"],!is", $content, $matches);
			foreach($matches[1] as $file) {
				$absolute_path = $this->convert_path_to_absolute($file, $path, $leave_querystring, $css_images);
				if (!empty($absolute_path)) {
					$content = preg_replace("!src=['\"]" . $file . "['\"]!", "src='" . $absolute_path . "'", $content);
				}
			}
		}
		return $content;
	}

	/**
	* Convert all background image to CSS Sprites if possible
	**/
	function convert_css_sprites ($content, $options, $css_url) {
/* try to get and increase memory limit */
		$memory_limit = round(str_replace("G", "000000000", str_replace("M", "000000", str_replace("K", "000", @ini_get('memory_limit')))));
/* 64M must enough for any operations with images. I hope... */
		if ($memory_limit < 128000000) {
			@ini_set('memory_limit', '128M');
		}
		$content = preg_replace("!/\*.*?\*/!is", "", $content);
		$dir = @getcwd();
		@chdir($options['cachedir']);
		$css_sprites = new css_sprites($content, array(
			'root_dir' => $options['installdir'],
			'current_dir' => $options['cachedir'],
			'html_cache' => $this->options['page']['cachedir'],
			'website_root' => $this->options['document_root'],
			'truecolor_in_jpeg' => $options['truecolor_in_jpeg'],
			'aggressive' => $options['aggressive'],
			'no_ie6' => $options['no_ie6'],
			'ignore' => $options['css_sprites_ignore'],
			'ignore_list' => $options['css_sprites_exclude'],
			'partly' => $options['css_sprites_partly'],
			'extra_space' => $options['css_sprites_extra_space'],
			'expires_rewrite' => $options['css_sprites_expires_rewrite'],
			'cache_images' => $this->options['page']['cache_images'],
			'cache_images_rewrite' => $this->options['page']['far_future_expires_rewrite'],
			'data_uris' => $options['data_uris'],
			'data_uris_separate' => $options['data_uris_separate'],
			'data_uris_size' => $options['data_uris_size'],
			'data_uris_ignore_list' => $options['data_uris_exclude'],
			'mhtml' => $options['mhtml'],
			'mhtml_size' => $options['mhtml_size'],
			'mhtml_ignore_list' => $options['mhtml_exclude'],
			'css_url' => $css_url,
			'dimensions_limited' => $options['dimensions_limited'],
			'no_css_sprites' => !$options['css_sprites'],
			'multiple_hosts' => empty($options['parallel']) ? array() : explode(" ", $options['parallel_hosts']),
			'user_agent' => $this->ua_mod,
			'punypng' => $options['punypng'],
			'restore_properties' => $options['css_restore_properties'],
			'ftp_access' => $this->options['page']['parallel_ftp'],
			'http_host' => $this->options['page']['host'],
			'https_host' => $this->options['page']['parallel_https'],
			'uniform_cache' => $this->options['uniform_cache']
		));
		@chdir($dir);
		return $css_sprites->process();
	}

	/**
	* Convert all background image to data:URI / mhtml / CDN
	**/
	function convert_data_uri ($content, $options, $css_url) {
		$dir = @getcwd();
		@chdir($options['cachedir']);
		$compressed = '';
		preg_match_all("!([^\{\}@]+)\{([^\}]*?background(-image|-position|-color|-repeat)?[^\}]+?)\}!is", preg_replace("!@media print\{.*?\}\}!", "", $content), $ims, PREG_SET_ORDER);
		$imgs = array();
/* form correct array with background properties */
		foreach ($ims as $im) {
			preg_match_all("!(background(-image|-position|-color|-repeat)?):([^;]*?(url[^;]*?\([^\)]+\))?[^;]*);?!is", $im[2], $is, PREG_SET_ORDER);
			foreach ($is as $i) {
				$imgs[] = array($im[0], $im[1], $i[1], '', $i[3]);
			}
		}
		if (count($imgs)) {
			$replaced = array();
			$replaced_base64 = array();
			$mhtml = in_array($this->ua_mod, $this->ies) && $options['mhtml'];
			$mhtml_code = "/*\nContent-Type:multipart/related;boundary=\"_\"";
			$location = 0;
			$sels = '';
			$data_uri_exclude = explode(" ", $options['data_uris_exclude']);
			$mhtml_exclude = explode(" ", $options['mhtml_exclude']);
			foreach ($imgs as $image) {
				$base64 = '';
				if (strpos(strtolower($image[4]), "url") !== false || strpos(strtolower($image[4]), "URL") !== false) {
/* strip all after ) - to get URL */
					$rule = preg_replace("@((url\([^\)]+\)(,\s*)?)+).*$@is", "$1", $image[4]);
					$css_image = preg_replace("@^.*((url\([^\)]+\)(,\s*)?)+)@is", "$1", $rule);
/* add rules after ) but before ; */
					$tale = preg_replace("@;.*$@is", "", str_replace($rule, '', $image[4]));
/* add rules to URL */
					$rule .= $tale;
					$rule_initial = str_replace(str_replace($rule, '', $image[4]), '', $image[0]);
					$image_saved = $css_image;
					if (empty($replaced[$image_saved])) {
						$css_image = explode(',', str_replace('base64,', '###', $css_image));
						$images = array();
						$b64 = array();
						foreach ($css_image as $im) {
							$arr = $this->convert_single_background(trim($im), $location, $css_url, $data_uri_exclude, $mhtml_exclude, $mhtml, $options);
							$images[] = $arr[0];
							$location = $arr[1];
							$b64[] = $arr[2];
						}
						if (count($images)) {
							$css_image = 'url('. implode('),url(', $images) . ')';
							if (implode('', $b64)) {
								$base64 = 'url('. implode('),url(', $b64) . ')';
							}
						} else {
							$css_image = $image_saved;
							$base64 = '';
						}
						$replaced[$image_saved] = $css_image;
						$replaced_base64[$image_saved] = $base64;
					} else {
						$base64 = $replaced_base64[$image_saved];
					}
					$content = str_replace($rule, str_replace($image_saved, $replaced[$image_saved], $rule), $content);
					if (!$mhtml && $base64) {
						$compressed .= $image[1] .
							'{' .
							$image[2] .
							':' .
							str_replace($image_saved, $base64, $rule) .
							'}';
					}
/* * html, body* matches Chrome, using *property for IE7- */
					if ($this->options['uniform_cache'] && !empty($base64) && $base64 != 'url()') {
						$sels .= $image[1] .
							'{*' .
							$image[2] .
							':' .
							$image[4] .
							'}';
					}
				} else {
/* get all background rules w/o URL and apply them */
					preg_match_all("@(background(-image|-position|-color|-repeat)?\s*):([^\}]+?)[;\}]@is", $image[0], $backs, PREG_SET_ORDER);
					if (is_array($backs)) {
						$b = '';
						foreach ($backs as $back) {
							$b .= $back[1] . ':' . $back[3] . ';';
						}
						$compressed .= $image[1] . '{' . $b  . '}';
					}
				}
			}
			if ($mhtml && !empty($mhtml_code)) {
				$compressed .= $mhtml_code . "\n\n--_--\n*/";
			}
/* add IE6/7 selectors */
			$content .= $sels;
/* clear content from junk */
			$content = preg_replace("@(background(-image)?:)?url\(\)([;\}])@is", "$3", $content);
			$content = preg_replace("@(background(-image)?:)?url\(\)(\s|;)?(\})?@is", "$1$4", $content);
			$content = preg_replace("@[^\{\}]+\{\}@is", "", $content);
		}
		@chdir($dir);
		return array($content, $compressed);
	}

	/**
	* Convert single background image to data:URI / mhtml / CDN
	**/
	function convert_single_background ($css_image, $location, $css_url, $data_uri_exclude, $mhtml_uri_exclude, $mhtml, $options) {
		$css_image = trim(substr($css_image, 4, strlen($css_image) - 5));
		$image_saved = $css_image;
/* remove quotes */
		if ($css_image{0} == '"' || $css_image{0} == "'") {
			$css_image = substr($css_image, 1, strlen($css_image) - 2);
		}
		$chunks = explode(".", $css_image);
		$extension = str_replace('jpg', 'jpeg', strtolower(array_pop($chunks)));
/* download external images */
		if (strpos($css_image, "//") !== false) {
			$css_image = $this->get_remote_file($css_image, $extension);
		}
		$css_image = $css_image{0} == '/' ? $this->options['document_root'] . substr($css_image, 1) : $options['cachedir'] . $css_image;
		$chunks = explode("/", $css_image);
		$filename = array_pop($chunks);
		$base64 = '';
		if (!@is_file($css_image) ||
			in_array($extension, array('htc', 'cur', 'eot', 'ttf', 'svg', 'otf', 'woff')) ||
			strpos($css_image, "mhtml:") !== false ||
			strpos($css_image, "data:") !== false) {
				$css_image = $image_saved;
		} else {
			$encoded = base64_encode($this->file_get_contents($css_image));
			$next = !$mhtml && !$options['data_uris'];
			if ($mhtml) {
				if (@filesize($css_image) < $options['mhtml_size'] &&
					!in_array($filename, $mhtml_uri_exclude) && !empty($encoded)) {
						$mhtml_code .= "\n\n--_\nContent-Location:" .
							$location .
							"\nContent-Transfer-Encoding:base64\n\n" .
							$encoded;
						$css_image = 'mhtml:' . $css_url . '!' . $location;
						$location++;
				} else {
					$next = 1;
				}
			} elseif ($options['data_uris']) {
				if (@filesize($css_image) < $options['data_uris_size'] &&
					!in_array($filename, $data_uri_exclude) && !empty($encoded)) {
						$css_image = '';
						$base64 = 'data:image/' . $extension . ';base64,' . $encoded;
				} else {
					$next = 1;
				}
			}
/* add multiple hosts/wo.static.php */
			if ($next) {
				$img = str_replace($this->options['document_root'], '/', $css_image);
				if ($this->options['page']['parallel'] && !empty($this->options['page']['parallel_hosts'])) {
					$hosts = explode(" ", $this->options['page']['parallel_hosts']);
					$host = $hosts[strlen($img)%count($hosts)];
/* if we have dot in the distribution host - it's a domain name */
					if (!$this->https || !($new_host = $this->options['page']['parallel_https'])) {
						$new_host = $host .
							((strpos($host, '.') === false) ? '.' . preg_replace("/^www\./", "", $_SERVER['HTTP_HOST']): '');
					}
					$css_image = "//" . $new_host . $img;
				} elseif ($this->options['page']['far_future_expires_rewrite']) {
					if (in_array($extension, array('bmp', 'gif', 'png', 'ico', 'jpeg'))) {
/* do not touch dynamic images -- how we can handle them? */
						$css_image = $this->options['page']['cachedir_relative'] . 'wo.static.php?' . $img;
					}
				} else {
					$css_image = $image_saved;
				}
			}
/* add quotes for background images with spaces */
			if (strpos($css_image, ' ')) {
				$css_image = "'" . $css_image . "'";
			}
		}
		return array(str_replace('###', 'base64,', $css_image), $location, $base64);
	}

	/**
	 * Converts REQUEST_URI to cached file name
	 *
	 **/
	function convert_request_uri ($uri = false) {
		$uri = $uri ? $uri : preg_replace("@index\.php$@", "", $_SERVER['REQUEST_URI']);
		$exclude = trim($this->options['page']['cache_params']);
		$exclude = ($exclude ? $exclude . ' ' : '') . 'utm_[^=]+ _openstat gclid';
		$uri = preg_replace("@(" . str_replace(" ", "|", $exclude) . ")=[^&\?]+[\?&]?@", "", $uri);
/* replace /, ?, & with - */
		$uri = str_replace(
			array('/?', '/', '?', '&', "'", '^', '%', '"', '<', '>', '$'),
			array('+', '+', '+', '+', '', '', '', '', '', '', ''),
			$uri);
		return $uri;
	}

	/**
	 * Downloads remote files to include
	 *
	 **/
	function get_remote_file ($file, $tag = "link", $recursion = 0) {
/* check if we already have this file */
		if (preg_match("/\/wo[abcdef0-9]+$/", $file)) {
			return preg_replace("/.*(wo[abcdef0-9]+$)/", "$1", $file);
		}
		$current_directory = @getcwd();
/* dirty fix for buggy getcwd call */
		if ($current_directory === '/') {
			$current_directory = $this->options['css']['installdir'];
		}
		if (function_exists('curl_init')) {
			if ($tag == 'javascript') {
				@chdir($this->options['javascript']['cachedir']);
			} else {
				@chdir($this->options['css']['cachedir']);
			}
			$ua = '';
			if (empty($_SERVER['HTTP_USER_AGENT']) && empty($this->options['uniform_cache'])) {
				if (($a = strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE ')) !== false) {
					$ua = 'MSIE ' . substr($_SERVER['HTTP_USER_AGENT'], $a+5, 3);
				} elseif (($a = strpos($_SERVER['HTTP_USER_AGENT'], 'Chrome/')) !== false) {
					$ua = 'Chrome ' . substr($_SERVER['HTTP_USER_AGENT'], $a+7, 3);
				} elseif (($a = strpos($_SERVER['HTTP_USER_AGENT'], 'Safari/')) !== false) {
					$ua = 'Safari ' . substr($_SERVER['HTTP_USER_AGENT'], $a+7, 3);
				} elseif (($a = strpos($_SERVER['HTTP_USER_AGENT'], 'Firefox ')) !== false) {
					$ua = 'Firefox ' . substr($_SERVER['HTTP_USER_AGENT'], $a+8, 3);
				} elseif (($a = strpos($_SERVER['HTTP_USER_AGENT'], 'Opera/')) !== false) {
					$ua = 'Opera ' . substr($_SERVER['HTTP_USER_AGENT'], $a+6, 3);
				}
			}
			$ua = $ua ? $ua : "Mozilla/5.0 (WEBO Site SpeedUp; http://www.webogroup.com/) Firefox 3.6";
			$return_filename = 'wo' . md5($file . $ua) . '.' . ($tag == 'link' ? 'css' : ($tag == 'script' ? 'js' : $tag));
			if (@file_exists($return_filename)) {
				$timestamp = @filemtime($return_filename);
			} else {
				$timestamp = 0;
			}
/* prevent download more than 1 time a day */
			if (!empty($timestamp) && $timestamp + 86400 > $this->time) {
				@chdir($current_directory);
				return $return_filename;
			}
			$return_filename_headers = $return_filename . '.headers';
/* try to download remote file */
			$ch = @curl_init((strpos($file, '//') == 0 ? 'http' . $this->https . ':' : '') . $file);
			$fph = @fopen($return_filename_headers, "w");
if ($ch) {
				@curl_setopt($ch, CURLOPT_HEADER, 0);
				@curl_setopt($ch, CURLOPT_USERAGENT, empty($_SERVER['HTTP_USER_AGENT']) ? $ua : $_SERVER['HTTP_USER_AGENT']);
				@curl_setopt($ch, CURLOPT_ENCODING, "deflate");
				@curl_setopt($ch, CURLOPT_REFERER, 'http://' . $this->options['host']);
				if (!@ini_set('open_basedir')) {
					@curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
				}
				@curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
				@curl_setopt($ch, CURLOPT_WRITEHEADER, $fph);
				if (!empty($this->options['page']['htaccess_username']) && !empty($this->options['page']['htaccess_password'])) {
					@curl_setopt($ch, CURLOPT_USERPWD, $this->options['page']['htaccess_username'] . ':' . $this->options['page']['htaccess_password']);
				}
				$contents = @curl_exec($ch);
				@file_put_contents($return_filename, $contents);
				@curl_close($ch);
				@fclose($fph);
/* check if we deal with 404 error, remove result */
				$headers = $this->file_get_contents($return_filename_headers);
/* Fix non-supported 301/302/303 redirect */
				if (strpos($headers, 'Location:') && strpos($headers, "HTTP/1.1 200") === false && strpos($headers, "HTTP/1.0 200") === false && $recursion < 10) {
					@unlink($return_filename);
					@unlink($return_filename_headers);
					return $this->get_remote_file(preg_replace("!.*\nLocation:\s*([^\r\n]+).*!is", "$1", $headers), $tag, $recursion++);
				}
				if (empty($contents) ||
					in_array(substr($headers, 0, 12),
						array('HTTP/1.1 400', 'HTTP/1.1 400', 'HTTP/1.1 404', 'HTTP/1.0 404', 'HTTP/0.1 404', 'HTTP/0.9 404', 'HTTP/1.1 502', 'HTTP/1.0 502', 'HTTP/0.1 502', 'HTTP/0.9 502', 'HTTP/1.1 500', 'HTTP/1.0 500', 'HTTP/0.1 500', 'HTTP/0.9 500')) ||
					($tag == 'link' && preg_match("!<body!is", $contents))) {
						@unlink($return_filename);
						$return_filename = '';
				} else {
/* try to replace background images to local ones */
					if (!empty($contents) && $tag == 'link') {
/* correct background-images in CSS file */
						$this->write_file($return_filename, $this->convert_paths_to_absolute($contents, array('file' => $file)));
					}
				}
				@unlink($return_filename . '.headers');
				@chdir($current_directory);
				return $return_filename;
			}
		}
		@chdir($current_directory);
		return false;
	}

	/**
	 * Sets User Agent modificator
	 *
	 **/
	function set_user_agent () {
		$this->ua_mod = '';
		if (!$this->options['performance']['uniform_cache']) {
/* min. supported IE version */
			$this->min_ie_version = 5;
/* max. supported IE version */
			$this->max_ie_version = 12;
			if (strpos($this->ua, 'MSIE') && strpos($this->ua, 'Opera') === false) {
				for ($version = $this->min_ie_version; $version < $this->max_ie_version; $version++) {
					if (strpos($this->ua, 'MSIE ' . $version)) {
						$this->ua_mod = '.ie' . $version;
					}
				}
			}
/* check for mobile agents */
			if (empty($this->ua_mod)) {
				$mobiles = array(
					'Android',
					'BlackBerry',
					'HTC',
					'iPhone',
					'iPod',
					'LG',
					'MOT',
					'Mobile',
					'NetFront',
					'Nokia',
					'Opera Mini',
					'Palm',
					'PPC',
					'SAMSUNG',
					'Smartphone',
					'SonyEricsson',
					'Symbian',
					'UP.Browser',
					'webOS');
				$j = 0;
/* strpos here is 2.5x faster than stristr and 6x faster than regexp */
				while (!empty($mobiles[$j]) && strpos($this->ua, $mobiles[$j++]) === false) {}
				if ($j != count($mobiles)) {
					$this->ua_mod = '.ma';
				}
			}
		}
	}
	
	/**
	* Replaces html entities with amps
	*
	*/
	function resolve_amps ($str) {
		return str_replace(array('&amp;', '&#38;', '&#038;', ''), array('&', '&', '&', ''), $str);
	}
	
	/**
	* Determines cache engine and create instance of it
	* 
	**/
	function start_cache_engine () {
		$cache_engines = array('0' => 'files',
			'1' => 'memcached',
			'2' => 'apc',
			'3' => 'xcache'
			);
		$cache_engines_options = array('0' => array('cache_dir' => $this->options['page']['cachedir']),
			'1' => array('server' => @$this->options['page']['cache_engine_options']),
			'2' => '',
			'3' => ''
			);
		if (!empty($cache_engines[$this->options['page']['cache_engine']])) {
			$engine_name = 'webo_cache_' . $cache_engines[$this->options['page']['cache_engine']];
			$engine_num = $this->options['page']['cache_engine'];
		} else {
			$engine_name = 'webo_cache_' . $cache_engines[0];
			$engine_num = 0;
		}
		include_once($this->options['page']['installdir'] . 'libs/php/cache_engine.php');
		$this->cache_engine = new $engine_name ($cache_engines_options[$engine_num]);
	}

	/**
	* Deletes cached HTML files determined by patterns. Just an interface for cache_engine delete_entries method.
	* 
	**/	
	function clear_html_cache ($patterns) {
		if (!empty($patterns)) {
			$this->cache_engine->delete_entries($patterns);
		}
	}
	
	/**
	* Converts given URL to another with base URI (<base> tag / header)
	*
	**/
	function convert_basehref ($uri) {
/* check if BASE URI is given */
		if (!empty($this->basehref) &&
/* convert only non-external URI */
			strpos($uri, '//') !== 0 && !strpos($uri, '://')) {
				if ($uri{0} == '/') {
					return $this->basehref_url . $uri;
				} else {
					return $this->basehref . $uri;
				}
		} else {
			return $uri;
		}
	}

	/**
	* Removes quotes from file content if magic_quotes_runtime enabled
	*
	**/
	function file_get_contents ($file) {
		if (get_magic_quotes_runtime()) {
			return stripslashes(@file_get_contents($file));
		} else {
			return @file_get_contents($file);
		}
	}

	/**
	* Removes markers for styles and BOM
	*
	**/
	function clear_trash () {
		$this->content = str_replace(array("@@@WSSSTYLES@@@", "@@@WSSSCRIPT@@@", "@@@WSSREADY@@@", ""), "", $this->content);
	}

	/**
	* Finishes all operations
	*
	**/
	function di ($clean = 0) {
		if (!$clean) {
			while (@ob_end_clean());
		}
		if (function_exists('fastcgi_finish_request')) {
			fastcgi_finish_request();
		}
		die();
	}

} // end class

?>