setCookie = function(name, value, expires, path, domain, secure) 
{
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
  document.cookie = curCookie;
}


getCookie = function(name)
{
    var value = null;
	var start = document.cookie.indexOf(name + "=");
	if (start != -1)
	{
		var valueStart = start + name.length + 1;
		var valueEnd = document.cookie.indexOf(";", valueStart);
		if (valueEnd == -1)
		{
			valueEnd = document.cookie.length;
		}
		value = unescape(document.cookie.substring(valueStart, valueEnd));
	}
	return value;
}

deleteCookie = function(cookieName, cookieValue) 
{
  var expires = "Thu, 01-Jan-70 00:00:01 GMT;";
  document.cookie = cookieName + "=" + escape (cookieValue) + "; expires=" + expires;
}