function SetCookie() {
 var cookieValue="it168";
 var cookieName="it168tag";
 var today = new Date();
 var expire = new Date();
// if (nDays==null || nDays==0) nDays=1;
 expire.setTime(today.getTime() + 3600000*24*1); 
 document.cookie = cookieName+"="+escape(cookieValue) + ";path=/;domain=.it168.com;expires="+expire.toGMTString();
}
SetCookie();