var tuituiban=[
{title : '美女大PK', url :'http://my.kunlun.com/space.php?do=home',thumb :'uploadfile/kunlun/uploadfile/200910/20091030114028328.jpg', adddate : '10-30'}
,{title : '昆仑家园', url :'http://my.kunlun.com/ad_url/',thumb :'uploadfile/kunlun/uploadfile/200910/20091023115228897.jpg', adddate : '10-23'}
];function readCookie(cookieName)
{

 var theCookie=""+document.cookie;
 var ind=theCookie.indexOf(cookieName);
 if (ind==-1 || cookieName=="") return ""; 
 var ind1=theCookie.indexOf(';',ind);
 if (ind1==-1) ind1=theCookie.length; 
 return unescape(theCookie.substring(ind+cookieName.length+1,ind1));

}

function writeCookie(cookieName,cookieValue,nDays)
{

 var today = new Date();
 var expire = new Date();
 if (nDays==null || nDays==0) nDays=1;
 expire.setTime(today.getTime() + 3600000*nDays);
 document.cookie = cookieName+"="+escape(cookieValue)
                 + ";expires="+expire.toGMTString();

}
var i=0;
	var np=readCookie('tuituiban_open');
	if(np==null){ 
	np=0;
	}else
	{
		if(np>= (tuituiban.length-1))
		{
			np=0;
			
		}else
		{
			
			np++;
		}
	
		
	}
	i = np;
	writeCookie('tuituiban_open',np,480);

document.write("<a href='"+tuituiban[i].url+"' target='_blank'><img src='http://static.kunlun.com/"+tuituiban[i].thumb+"' /></a>");