function GetCookie (CookieName) {
   var cname = CookieName + "=";
   var i = 0;
   while (i < document.cookie.length) {
     var j = i + cname.length;
     if (document.cookie.substring(i, j) == cname){
       var leng = document.cookie.indexOf (";", j);
       if (leng == -1) leng = document.cookie.length;
       return unescape(document.cookie.substring(j, leng));
     }
     i = document.cookie.indexOf(" ", i) + 1;
     if (i == 0) break;
   }
   return "*";
}

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