IE6下支持li：hover的鼠标滑过效果，方法绝对正确，我已测试过

本文提供了一段JavaScript代码，用于解决Internet Explorer浏览器不支持CSS中li:hover的问题。通过为列表项添加特定类名并在鼠标悬停时激活样式，这段代码使IE能够模拟现代浏览器的行为。

<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>IE的hover效果实现</title>
<script language="javascript">
stuHover = function() {
var cssRule;
var newSelector;
for (var i = 0; i < document.styleSheets.length; i++)
   for (var x = 0; x < document.styleSheets[i].rules.length ; x++)
    {
    cssRule = document.styleSheets[i].rules[x];
    if (cssRule.selectorText.indexOf("LI:hover") != -1)
    {
     newSelector = cssRule.selectorText.replace(/LI:hover/gi, "LI.iehover");
     document.styleSheets[i].addRule(newSelector , cssRule.style.cssText);
    }
   }
var getElm = document.getElementById("nav").getElementsByTagName("LI");
for (var i=0; i<getElm.length; i++) {
   getElm[i].onmouseover=function() {
    this.className+=" iehover";
   }
   getElm[i].onmouseout=function() {
    this.className=this.className.replace(new RegExp(" iehover\\b"), "");
   }
}
}
if (window.attachEvent) window.attachEvent("onload", stuHover);
</script>
<style type="text/css">
li:hover { background:#00CC00; display:block; }
</style>
</head><body >
<div id="nav">
<ul><li>让IE6支持li:hover的JS代码</li></ul>
</div>
</body>
</html>