web网页设计问题，怎么设计出下图的效果，就是鼠标移上去就切换内容
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我给你简单的写了例子，至于具体样式，你自己来写吧
<!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>无标题文档</title>
<script>
function meun(mun) {
var tab_name = document.getElementsByName("li");
for(var j=1;j<tab_name.length+1;j++){
for ( var i=1; i<=j; i++){
if ( i==mun ){
document.getElementById("right"+i).style.display="block";
document.getElementById("li"+i).style.color="#0ff";
}
else {
document.getElementById("right"+i).style.display="none";
document.getElementById("li"+i).style.color="#000";
}
}
}
}
</script>
<style>
.left_ul { float:left; width:200px;}
.left_ul li { height:30px; line-height:30px; text-align:center;}
.right1 { display:block; width:400px; float:left; height:200px; background:#999999;}
.right2 { display:none; width:400px; float:left; height:200px; background:#af6439;}
.right3 { display:none; width:400px; float:left; height:200px; background:#0ff;}
.right4 { display:none; width:400px; float:left; height:200px; background:#00f;}</style>
</head>
<body>
<ul class="left_ul">
<li name="li"><a href="#" onmousemove="meun(1)" id="li1">栏目1</a></li>
<li name="li"><a href="#" onmousemove="meun(2)" id="li2">栏目1</a></li>
<li name="li"><a href="#" onmousemove="meun(3)" id="li3">栏目1</a></li>
<li name="li"><a href="#" onmousemove="meun(4)" id="li4">栏目1</a></li>
</ul>
<div class="right1" id="right1">11111111111111111111111</div>
<div class="right2" id="right2">222222222222222222222</div>
<div class="right3" id="right3">3333333333333333333333</div>
<div class="right4" id="right4">44444444444444444444444444</div>
</body>
</html>
<!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>无标题文档</title>
<script>
function meun(mun) {
var tab_name = document.getElementsByName("li");
for(var j=1;j<tab_name.length+1;j++){
for ( var i=1; i<=j; i++){
if ( i==mun ){
document.getElementById("right"+i).style.display="block";
document.getElementById("li"+i).style.color="#0ff";
}
else {
document.getElementById("right"+i).style.display="none";
document.getElementById("li"+i).style.color="#000";
}
}
}
}
</script>
<style>
.left_ul { float:left; width:200px;}
.left_ul li { height:30px; line-height:30px; text-align:center;}
.right1 { display:block; width:400px; float:left; height:200px; background:#999999;}
.right2 { display:none; width:400px; float:left; height:200px; background:#af6439;}
.right3 { display:none; width:400px; float:left; height:200px; background:#0ff;}
.right4 { display:none; width:400px; float:left; height:200px; background:#00f;}</style>
</head>
<body>
<ul class="left_ul">
<li name="li"><a href="#" onmousemove="meun(1)" id="li1">栏目1</a></li>
<li name="li"><a href="#" onmousemove="meun(2)" id="li2">栏目1</a></li>
<li name="li"><a href="#" onmousemove="meun(3)" id="li3">栏目1</a></li>
<li name="li"><a href="#" onmousemove="meun(4)" id="li4">栏目1</a></li>
</ul>
<div class="right1" id="right1">11111111111111111111111</div>
<div class="right2" id="right2">222222222222222222222</div>
<div class="right3" id="right3">3333333333333333333333</div>
<div class="right4" id="right4">44444444444444444444444444</div>
</body>
</html>
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