PHP 向右侧拉菜单实现代码，测试使用中

这个是由asp二级侧拉菜单改的

<script language="javascript"> 
// JavaScript Document startList = function() { 
if (document.all && document.getElementById) { 
navRoot = document.getElementById("nav"); 
for (i=0; i<navRoot.childNodes.length; i++) { 
node = navRoot.childNodes[i]; 
if (node.nodeName=="LI") { 
node.onmouseover=function() { 
this.className+=" over"; 
} 
node.onmouseout=function() { 
this.className=this.className.replace(" over", ""); 
} 
} 
} 
} 
} 
window.onload=startList; 
</script> 
<style type="text/css"> 
<!-- 
ul { 
margin: 0; 
padding: 0; 
list-style: none; 
width: 200px; /* Width of Menu Items */ 
border-bottom: 0px solid #ccc; 
} 
ul li { 
position: relative; 
} 
li ul { 
position: absolute; 
left: 199px; /* Set 1px less than menu width */ 
top: 0; 
display: none; 
} 
/* Styles for Menu Items */ 
ul li a { 
display: block; 
text-decoration: none; 
color: #777; 
background: #8A0000; /* IE6 Bug */ 
padding: 5px; 
border: 0px #ccc; /* IE6 Bug */ 
border-bottom: 0; 
} 
/* Holly Hack. IE Requirement \*/ 
* html ul li { float: left; height: 1%; } 
* html ul li a { height: 1%; } 
/* End */ 
li:hover ul, li.over ul { display: block; } /* The magic */ 
.ulbox{border:1px solid #ffffff;overflow:hidden;margin-left:1px;background-color:#E87DDD} 
--> 
</style> 
<table width="200" cellspacing="0" cellpadding="0" border="0" align="center"> 
<tr> 
<td align="left"> 
<ul id="nav"> 
<?php 
require('../Connections/lr.php'); 
mysql_select_db($database_lr, $lr); 
$query = mysql_query("SELECT * FROM bigclass order by sort"); 
$j=0; 
while($row=mysql_fetch_array($query)) 
{$j=$j+1; 
$bigclassid=$row['bigclassid']; 
$bigclassname_leftmenu=$row['bigclassname']; 
if ($htmlname==1){ 
$bigclass_htmlname_leftmenu=$bigclassname_leftmenu;//大类名称 
if (substr_count($bigclass_htmlname_leftmenu," ")>0){ 
$bigclass_htmlname_leftmenu= str_replace(" ","-",$bigclass_htmlname_leftmenu); 
} 
} 
if ($htmlname==0){ 
$bigclass_htmlname_leftmenu=$bigclassid; 
} 
?> 
<li><a href=""><?php echo $row['bigclassname']?></a> 
<ul class="ulbox"> 
<?php 
mysql_select_db($database_lr, $lr); 
$query_small = mysql_query("SELECT * FROM smallclass where bigclassid='$bigclassid' order by sort"); 
while($rs=mysql_fetch_array($query_small)) 

{ 
$smallclassid_small_leftmenu=$rs['smallclassid']; 
$smallclassname_small=$rs['smallclassname'];//小类名称 
if ($htmlname==1){ 
$smallclass_htmlname=$smallclassname_small; 
if (substr_count($smallclass_htmlname," ")>0){ 
$smallclass_htmlname= str_replace(" ","-",$smallclass_htmlname); 
} 
} 
if ($htmlname==0){ 
$smallclass_htmlname=$smallclassid_small_leftmenu; 
} 
?> 
<li><a href="" class="my2"><?php echo $rs['smallclassname']?></a></li> 
<?php 
} ?> 
</ul> 
</li> 
<?php 
} ?> 
</ul> 
</td></tr></table>