<!DOCTYPE html>
<html>
<head>
<title>图片验证码</title>
<meta charset="utf-8">
</head>
<style type="text/css">
<!--
.style2 {
color: #00FF00;
font-weight: bold;
font-size: 16px;
}
.style5 {color: #00FF00}
-->
</style>
<body>
<div style="width: 500px;height: 250px;" id="div1">
<table width="265" height="110" border="1" align="center" bordercolor="#0000FF" id="form">
<tr>
<td width="90"><span class="style5">用户名</span></td>
<td width="169"><input name="textfield" type="text"></td>
</tr>
<tr>
<td><span class="style5">密 码</span></td>
<td><input name="textfield2" type="text"></td>
</tr>
<tr>
<td><span class="style5">确认密码</span></td>
<td><input name="textfield3" type="text"></td>
</tr>
<tr>
<td colspan="2"><div align="center">
<input name="Submit2" type="button" value="保存">
<input name="Button" type="button" value="取消">
</td>
</tr>
</table>
</div>
<script type="text/javascript">
var img="";
var source=['0','1','2','3','4'];
var t=null;
t=setTimeout(change,1000);//一秒换一张背景图
function change(){
clearTimeout(t);
var n=Math.floor(Math.random()*source.length);
var s=source[n];
var div1=document.getElementById("div1");
div1.style.backgroundImage="url('Images/"+s+".jpg')";
t=setTimeout(change,1000);
}
</script>
</body>
</html>
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