关于IE6下层的透明有关问题_跨浏览器开发

关于IE6下层的透明问题

HTML code

<div iclass="divTest">    <div class="divChild"></div>    <img src="demo_files/sago.jpg" width="300" height="200" class="childImg" /></div>

CSS code

.divTest{width:300px;height:200px;position:relative;}.divChild{width:300px;height:200px;position: absolute;top:0px;left:0px;filter:alpha(opacity=50);opacity:0.5;background-color:white; z-index:100;}.childImg{top:0px;left:0px;position:absolute;z-index:1;}

请问为什么我这段在IE6下为什么没有效果呢？

------解决方案--------------------------------------------------------
我也遇到这样的问题

你到
http://topic.csdn.net/u/20100521/17/512931E6-2500-4481-B4B9-88FE49422DA6
上看看能不能帮你
------解决方案--------------------------------------------------------
filter:Alpha(Opacity=90,Style=0); opacity:0.90;
------解决方案--------------------------------------------------------

HTML code

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><head runat="server">  <title>Untitled Page</title>  <style>      .divTest{width:300px;height:200px;position:relative;}.divChild{width:300px;height:200px;position: absolute;top:0px;left:0px;opacity:0.5;filter:alpha(opacity=50);background-color:white; z-index:100;}.childImg{top:0px;left:0px;position:absolute;z-index:1;}  </style></head><body>  <div iclass="divTest">    <div class="divChild"></div>    <img src="demo_files/sago.jpg" width="300" height="200" class="childImg" /></div></body></html>