/application/views/index/left_view.php

<div id="navsecond">

<?php

	if($location->num_rows()>0){

		$row_1=$location->row_array();

		echo '<h3>'.$row_1['name'].'</h3>';

	}

?>

<DIV id=menu-list>

	<UL> 

 			<P>

				<A href="javascript: exp.openAll();">全部展开</A> | 

				<A href="javascript: exp.closeAll();">全部收起</A>

			</P>

		<h5>

	<SCRIPT type=text/javascript>

		exp = new dTree('exp');

		exp.add(0,-1,"");

	<?php 

		$num=$location->num_rows();

		for ($i = 1; $i < $num+1; $i++) {

			$row_2=$location->row_array($i);

			if ($row_2['level']=='2') {

				echo 'exp.add('.$row_2['id'].',0,"'.$row_2['name'].'","","","");';

			}else if($row_2['level']=='3'){

				echo 'exp.add('.$row_2['id'].','.$row_2['parent_id'].',"'.$row_2['name'].'","","'.$row_2['name'].'","main-frame");' ;

			}else if($row_2['level']=='4'){

				echo 'exp.add('.$row_2['id'].','.$row_2['parent_id'].',"'.$row_2['name'].'","'.site_url('welcome/advertiser/'.$row_2['id']).'","'.$row_2['name'].'");' ;

			}

		}

	?>

	document.write(exp);

	</SCRIPT>

		</h5>

	</UL>

</DIV>

</div>