<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>
<title>div drop down list </title>
<body>
<iframe style= "position:absolute;z-index:9;width:expression (this.nextSibling.offsetWidth); Height:expression ( This.nextSibling.offsetHeight); top:expression (THIS.NEXTSIBLING.OFFSETTOP); Left:expression ( This.nextSibling.offsetLeft); "frameborder=" 0 "></iframe>
<div style= "Z-index:10;position:absolute;background-color:blue;width:100;height:18;overflow:hidden;" Onmouseover= "this.style.height=54;" onmouseout= "this.style.height=18;" >aaaaaaa<br>bbbbbbb<br>ccccccc</div>
<select style= "width:200" ><option>test0<option>test1<option>test2<option>test3 </select>
</body>
<select><option>ssssssssssss</option></select>
<div style= "z-index:101;background-color:green;position:absolute;top:0;left:0;width:200;height:200;" >
A
</div>
<iframe style= "z-index:100;background-color:green;position:absolute;top:0;left:0;width:200;height:200;" ></iframe>