闲来无事，持续更新~要做一个有追求的版本，列表页增加树形菜单

<div style="position:absolute;width:180px;overflow-x:hidden" id="treediv" class="tree"></div><br />
<script type="text/javascript"><br />
var data=[<br />
<?php<br />
	$sql="select bid,count(distinct bid),max(ssort) as st from " .C('db_prefix'). "small_block group by bid order by st desc";<br />
	$query=mysql_query($sql);<br />
	$num=mysql_num_rows($query);<br />
	if($num>0){<br />
		while($arr=mysql_fetch_array($query)){<br />
			$ssql="select * from " .C('db_prefix'). "big_block where id=".$arr['bid'];<br />
			$squery=mysql_query($ssql);<br />
			$snum=mysql_num_rows($squery);<br />
			if($snum>0){<br />
				while($sarr=mysql_fetch_array($squery)){<br />
?><br />
{t:'<?php echo $sarr['bzone']; ?>',s:[<?php		<br />
					$ssql2="select * from " .C('db_prefix'). "small_block where bid=".$sarr['id'];<br />
					$squery2=mysql_query($ssql2);<br />
					$snum2=mysql_num_rows($squery2);<br />
					if($snum2>0){<br />
					while($sarr2=mysql_fetch_array($squery2)){<br />
						?>{t:'<?php echo $sarr2['szone'];?>',url:'{site}/index.php/List{url}index{url}f{url}<?php echo $sarr2['id']; ?>{shtml}'},<?php<br />
					 }<br />
				 }<br />
			?><br />
		]},<?php<br />
				}<br />
			}<br />
		}<br />
	}<br />
	?><br />
];<br />
var et=new Tree(data,'treediv');<br />
var dts=document.getElementById("treediv").getElementsByTagName("dt");<br />
for(var i=0;i<dts.length;i++){<br />
if(document.all) {dts[i].click();}<br />
else {<br />
  	var e = document.createEvent("MouseEvents");<br />
  	e.initEvent("click", false, false);<br />
  	dts[i].dispatchEvent(e);<br />
  }<br />
}<br />
var navH = document.getElementById("treediv").offsetTop;<br />
window.onscroll=function(){<br />
    var scroH = window.pageYOffset|| document.documentElement.scrollTop || document.body.scrollTop;<br />
    if (scroH >= navH) {<br />
       document.getElementById("treediv").style.position="fixed";<br />
       document.getElementById("treediv").style.top=0;<br />
    } else if (scroH < navH) {<br />
       document.getElementById("treediv").style.position="absolute";<br />
       document.getElementById("treediv").style.top="30px";<br />
    }<br />
}<br />
</script>