记些小技巧，方便大家方便自己。
直接来代码：
Code1
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>2
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
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<html xmlns="http://www.w3.org/1999/xhtml" >6
<head runat="server">7
<title>无标题页</title>8
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<script language="javascript" type="text/javascript"> 10
//显示大图11
function showPic(sUrl)
{ 12
var x,y; 13
x = event.clientX; 14
y = event.clientY; 15
document.getElementById("picLayer").style.left = x; 16
document.getElementById("picLayer").style.top = y; 17
document.getElementById("picLayer").innerHTML = "<img src=\"" + sUrl + "\">"; 18
document.getElementById("picLayer").style.display = "block"; 19
} 20
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//隐藏大图22
function hiddenPic(){ 23
document.getElementById("picLayer").innerHTML = ""; 24
document.getElementById("picLayer").style.display = "none"; 25
} 26
</script> 27
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</head>30
<body>31
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<form id="form1" runat="server">33
<div>34
<%--显示大图片的层，样式比较简单大家可以自己定义--%>35
<div id="picLayer" style="display:none;position:absolute;z-index:1;"></div>36
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<%--显示图片--%>38
<img src="mypic.jpg" onmouseout="hiddenPic();" onmousemove="showPic(this.src);" width="200" height="100" alt="哈哈"/> 39
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</div>42
</form>43
</body>44
</html>45
很简单，有注释。有更好的方法请指教。