/lib/Varien/Data/Form/Element/Link.php

<?php
/**
 * Magento Enterprise Edition
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Magento Enterprise Edition License
 * that is bundled with this package in the file LICENSE_EE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://www.magentocommerce.com/license/enterprise-edition
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Varien
 * @package     Varien_Data
 * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://www.magentocommerce.com/license/enterprise-edition
 */

/**
 * Varien Form element renderer to display link element
 *
 * @category   Varien
 * @package    Varien_Data
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Varien_Data_Form_Element_Link extends Varien_Data_Form_Element_Abstract
{
    public function __construct($attributes=array())
    {
        parent::__construct($attributes);
        $this->setType('link');
    }

    /**
     * Generates element html
     *
     * @return string
     */
    public function getElementHtml()
    {
        $html = $this->getBeforeElementHtml();
        $html .= '<a id="'.$this->getHtmlId().'" '.$this->serialize($this->getHtmlAttributes()).'>'. $this->getEscapedValue() . "</a>\n";
        $html .= $this->getAfterElementHtml();
        return $html;
    }

    /**
     * Prepare array of anchor attributes
     *
     * @return array
     */
    public function getHtmlAttributes()
    {
        return array('charset', 'coords', 'href', 'hreflang', 'rel', 'rev', 'name',
            'shape', 'target', 'accesskey', 'class', 'dir', 'lang', 'style',
            'tabindex', 'title', 'xml:lang', 'onblur', 'onclick', 'ondblclick',
            'onfocus', 'onmousedown', 'onmousemove', 'onmouseout', 'onmouseover',
            'onmouseup', 'onkeydown', 'onkeypress', 'onkeyup');
    }
}