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

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

function SetCookie (name, value) 
{
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var path = (argc > 2) ? argv[2] : null;
  var domain = (argc > 3) ? argv[3] : null;
  var secure = (argc > 4) ? argv[4] : false;
	var expDays = 90;
	var expires = new Date();
	expires.setTime(expires.getTime() + (expDays*24*60*60*1000)); 
  
  document.cookie = name + "=" + escape (value) +
    ("; expires=" + expires.toGMTString()) +
    ((path == null) ? "; path=/" : ("; path=" + path)) +
    ((domain == null) ? "" : ("; domain=" + domain)) +
    ((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) 
{
  var exp = new Date();
  exp.setTime (exp.getTime() - 1);
  var cval = GetCookie (name, null);
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}