<!DOCTYPE html>
<html>
<head>
<title>下拉菜单示例</title>
<script language="javaScript">
function show(menu){
document.getElementById(menu).style.visibility="visible";}
function hide(){
document.getElementById("menu1").style.visibility="hidden";
document.getElementById("menu2").style.visibility="hidden";
document.getElementById("menu3").style.visibility="hidden";}
</script>
</head>
<body>
<table>
<tr bgcolor="#9999FF" align="center">
<td width="120" onMouseMove="show('menu1')" onMouseOut="hide()">系列课程</td>
<td width="120" onMouseMove="show('menu2')" onMouseOut="hide()">教学课件</td>
<td width="120" onMouseMove="show('menu3')" onMouseOut="hide()">课程大纲</td>
</tr>
</table>
<div id="menu1" onMouseMove="show('menu1')" onMouseOut="hide()" style="background:#9999FF;position:absolute;left:12;top:38;width:120;visibility:hidden">
<span>c++程序设计</span><br>
<span>java程序设计</span><br>
<span>c#程序设计</span><br>
</div>
<div id="menu2" onMouseMove="show('menu2')" onMouseOut="hide()" style="background:#9999FF;position:absolute;left:137;top:38;width:120;visibility:hidden">
<span>c++课件</span><br>
<span>java课件</span><br>
<span>c#程课件</span><br>
</div>
<div id="menu3" onMouseMove="show('menu3')" onMouseOut="hide()" style="background:#9999FF;position:absolute;left:260;top:38;width:120;visibility:hidden">
<span>c++教学大纲</span><br>
<span>java教学大纲</span><br>
<span>c#教学大纲</span><br>
</div>
</body>
</html>
下拉菜单显示
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转载自blog.csdn.net/wanwu_fusu/article/details/84147263
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