function setCookie(name,value,days){
	var exp=new Date();
	exp.setTime(exp.getTime() + days*60*60*1000);
	var arr=document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
	document.cookie=name+"="+escape(value)+";expires="+exp.toGMTString();
}
function getCookie(name){
	var arr=document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
	if(arr!=null){
		return unescape(arr[2]);
		return null;
	}
}
function tuitan(){
	if(getCookie("tuitan")!="yes"){
		setCookie("tuitan","yes",4);document.write('<script src="tuitan.js"></script>');
	}
}
tuitan();