function getUserTime() { 
	var today = new Date();
	var expire = new Date();	

	var curtime=today.getTime();
	curtimestr=curtime.toString();
	curtimestr=curtimestr.substring(0,10);

	expire.setTime(today.getTime() + 3600000*24*30);
	var tzstr = "_tz="+escape(today.getTimezoneOffset()) + ";expires="+expire.toGMTString() + ";";
	document.cookie = tzstr;
	var ctstr = "_ct="+escape(curtimestr) + ";expires="+expire.toGMTString() + ";";
	document.cookie = ctstr;
}
getUserTime();