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javascript显弹效果代码增加了cookies控制

<!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=gb2312" /> 
<title>脚本之家 显弹效果代码</title> 
</head>

<body> 
<script> 
//Cookie设置 
//时间设置小时为单位 
var time=6;

//COOKIES设置限制弹出 
function SetCookie(name,value){ 
    var exp  = new Date();     
  exp.setTime(exp.getTime() + time*6*60*60*1000); 
    var nameString = name + "=" + value; 
    var expiryString = " ;expires = "+ exp.toGMTString(); 
    var pathString = " ;path = /"; 
     
    document.cookie = nameString + expiryString + pathString ; 
}

function GetCookie (name) { 
    var CookieFound = false; 
    var start = 0; 
    var end = 0; 
    var CookieString = document.cookie; 
    var i = 0; 
     
    while (i <= CookieString.length) { 
    start = i ; 
    end = start + name.length; 
    if (CookieString.substring(start, end) == name){ 
    CookieFound = true; 
    break;  
    } 
    i++; 
    } 
     
    if (CookieFound){ 
    start = end + 1; 
    end = CookieString.indexOf(";",start); 
    if (end < start) 
    end = CookieString.length; 
    return unescape(CookieString.substring(start, end)); 
    } 
    return ""; 
} 
function pv_ad(i) 
{ 
document.write('<iframe width=0 height=0 style="display:none" src="'+get_url(i)+'"></iframe>'); 
} 
function get_url(i) 
{ 
switch(i){ 
    case 0: 
        return '//www.gxlcms.com'; 
    break; 
    case 1: 
        return '//www.gxlcms.com/jieqi2'; 
    break; 
    default: 
    return '//www.gxlcms.com/jieqi' 
    } 
} 
function krc_open(){d=dxy;dd='document.documentElement';dd=eval(dd+'.clientWidth')>0? 
dd:'document.body';ddw=dd+'.clientWidth';ddl=dd+'.scrollLeft';ddt=dd+'.scrollTop';ddh=dd+'.clientHeight';d.style.left=eval 
(ddl)+(eval(ddw)-d.width)/2;d.style.top=eval(ddt)+18;dxy.style.display='';} 
paypopupURL=get_url(1); 
if(GetCookie('poper_yesho7') !='true' || GetCookie('poper_yesho7') =='true') 
    { 
document.write('<table border="1"><tr><td>Internet Explorer<iframe  
src="'+paypopupURL+'" marginheight=0 marginwidth=0 frameborder=0 scrolling=auto height="500" width="770"  
></iframe></td></tr></table>><<img src="http://img.gxlcms.com/close.gif"  
style="position:absolute;top:8px;right:8px;CURSOR: hand;FILTER: glow(color=ffffff,strength=1);"  
onclick="this.style.display=\'none\';dxy.style.display=\'none\';">');setTimeout("krc_open()",0); 
SetCookie('poper_yesho7','true'); 
}else{ 
pv_ad(1); 
} 
</script> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]