function getCookieVal(offset){
var endstr;
   endstr = document.cookie.indexOf(";", offset);
   if (endstr == -1) endstr = document.cookie.length;
   return unescape(document.cookie.substring(offset, endstr));
}

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

function SetCookie(name, value){
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (2 < argc) ? argv[2] : null;
var path = (3 < argc) ? argv[3] : null;
var domain = (4 < argc) ? argv[4] : null;
var secure = (5 < argc) ? argv[5] : false;
   document.cookie = name + "=" + escape (value) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + ((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : "");
}