// JavaScript Document
<!--Top image の切り替え-->
function changeimgs(){
	lmgList = new Array(
		new Array("images/main_img.jpg"),
		new Array("images/main_img02.jpg"),
		new Array("images/main_img03.jpg"),
		new Array("images/main_img04.jpg")
	);
	//rndNum = Math.floor(Math.random() * lmgList.length);

	rndNum = CookieRead("num");
	if(!rndNum){
		rndNum = 0;
	}

	if(rndNum >= lmgList.length){
		rndNum = 0;
	}

	document.write("<img src="+lmgList[rndNum]+" width='488' height='180' border='0' name='images'>");

	rndNum++;

	CookieWrite("num", rndNum,1);
}

function CookieWrite(kword, kdata, kday)
{
	if(!navigator.cookieEnabled){
		//alert(";クッキーへの書き込みができません");
		return;
  	}
	sday = new Date();
	sday.setTime(sday.getTime() + (kday * 1000 * 60 * 60 * 24));
	s2day = sday.toGMTString();
	document.cookie = kword + "=" + escape(kdata) + ";expires=" + s2day;
}

function CookieRead(kword)
{
	if(typeof(kword) == "undefined")
	return "";
	kword = kword + "=";
	kdata = "";
	scookie = document.cookie + ";";
	start = scookie.indexOf(kword);
	if (start != -1){
		end = scookie.indexOf(";", start);
		kdata = unescape(scookie.substring(start + kword.length, end));
	}
	return kdata;
}
//-->