chkCookie();

function getRandomNum(){
	var num=Math.floor(Math.random()*10000000000)+1;
	return num;
}
function setCookie(setname,setdata){
	t = new Date();
	t.setTime(t.getTime()+(30*365*1000*60*60*24));
	expt = t.toGMTString();
	document.cookie = setname+"="+escape(setdata)+";expires="+expt+";PATH=/";
}
function getCookie(getname){
	cName = getname+"=";
	getdata = null;
	cCookie = document.cookie+";";
	start = cCookie.indexOf(cName);
	if (start != -1){
		end = cCookie.indexOf(";",start);
		getdata = unescape(cCookie.substring(start+cName.length,end));
	}
	return getdata;
}
function chkCookie(){
	//Cookieの取得
	ident = getCookie("visitor-ident");
	//なかったらセット
	if(ident==null){
		var num1=getRandomNum();
		var num2=getRandomNum();
		var num3=getRandomNum();
		setCookie("visitor-ident",String(num1) + String(num2) + String(num3));
	}
}