DataList嵌套实现自动伸缩菜单

部分javascript代码:

<script language="javascript" type="text/javascript">
<!--
function menu(aa,bb){
var ss=aa.id+"1.jpg";

if(aa.style.display=="none"){

zxjg.style.display="none";
kqgl.style.display="none";

aa.style.display="";
d01.src="newimg/zxjg0.jpg";
d02.src="newimg/kqgl0.jpg";

bb.src="newimg/"+ss;
}
else
{
aa.style.display="none";

}
}
//-->
</script>