div层在IE6上面显示错位，怎么办？怎样设置代码让层在IE6和IE8上面都能够运行？
程序代码：<html>
<head><title>层的滚动效果</title></head>
<body>
<style>
#fbtn{
display:none;
overflow:hidden;
border-style:solid;
border-width:1px;
border-color:#e1e1c9
#e1e1c9 #6e6e56 #6e6e56;
padding:1 1 1
1;
width:140px;
height:30px;
}
#fbtn_txt{
position:relative;
}
#fbtn_txt
div{
margin:0auto;
height:30px;
padding-top:11px;
font-size:14px;
font-family:small
fonts;
color:#FFFFFF;
text-align:center;
cursor:hand;
}
#fbtn_mask{
background-color:#005EBB;
position:relative;
width:100%;
height:100%;
}
.bgcolor{
background:#FFFFFF}
.divcolor{
background:#75BAFF}
</style>
<div class="bgcolor"><table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="10" colspan="2" bgcolor="#75BAFF"></td>
</tr>
<tr>
<td valign="top">
<div id =divcolor class="divcolor">
<div id=fbtn>
<div id=fbtn_mask></div>
<div id=fbtn_txt>
<div>政策法规</div>
<div>政策法规</div>
</div>
</div>
<div id=fbtn>
<div id=fbtn_mask></div>
<div id=fbtn_txt>
<div>职业标准</div>
<div>职业标准</div>
</div>
</div>
<div id=fbtn>
<div id=fbtn_mask></div>
<div id=fbtn_txt>
<div>鉴定工种</div>
<div>鉴定工种</div>
</div>
</div>
<div id=fbtn>
<div id=fbtn_mask></div>
<div id=fbtn_txt>
<div>证书查询</div>
<div>证书查询</div>
</div>
</div>
<div id=fbtn>
<div id=fbtn_mask></div>
<div id=fbtn_txt>
<div>证书样本</div>
<div>证书样本</div>
</div>
</div>
<div id=fbtn>
<div id=fbtn_mask></div>
<div id=fbtn_txt>
<div>实训基地</div>
<div>实训基地</div>
</div>
</div>
<div id=fbtn>
<div id=fbtn_mask></div>
<div
id=fbtn_txt>
<div>申报流程</div>
<div>申报流程</div>
</div>
</div>
</div></td>
<td width="90%">加内容</td>
</tr>
</table>
<script>
var current=null;
var t=null;
for(var i=0;i<fbtn.length;i++){
fbtn_txt[i].style.posTop=-30;
fbtn_mask[i].style.posTop=-30;
fbtn[i].index=i;
fbtn[i].style.display="block";
fbtn[i].onmouseover=function(){
if(!current){
current=this;
domove(this.index);
}
else
if(current!=this){
domove(current.index);
domove(this.index);
current=this;
}
}
fbtn[i].onmouseout=function(){
if(event.toElement==this.parentElement&t==this){
domove(this.index);
current=null;
}
}
}
function domove(num){
var o=fbtn_txt[num];
var m=fbtn_mask[num];
if(o.style.posTop<-60){
o.style.display="none";
var t=o.children[1].innerHTML;
o.children[1].innerHTML=o.children[0].innerHTML;
o.children[0].innerHTML=t;
o.style.posTop=-30;
o.style.display="block";
if(m.style.posTop>30)
m.style.posTop=-30;
else
m.style.posTop=0;
}
else{
m.style.posTop+=6;
o.style.posTop-=6;
setTimeout('domove('+num+')',15);
}
}
</script></div>
</body>
</html>代码直接拷贝下去就可以直接运行，但在IE6上面层就显示错位，IE8上面可以。高手们帮帮小弟吧，如果满意的话可以再送100分，谢谢了
