function GetCookie (name) {
     var arg = name + "=";
     var alen = arg.length;
     var clen = document.cookie.length;
     var endstr = 0;
     var i = 0;
     while (i < clen) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg){
             endstr = document.cookie.indexOf (";", j);
             if (endstr == -1){
                  endstr = document.cookie.length;
             }
             return unescape(document.cookie.substring(j, endstr));
        }
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) { break; }
      }
      return null;
}
var cook_uname = GetCookie('uname');