//ブラウザのバージョンチェック
var brw_v = navigator.appVersion.charAt(0);
var brw_n = navigator.appName.charAt(0);
var iIE4 = false;
var iNN4 = false;
if(brw_v >= 4 && brw_n == "M") {
	iIE4 = true;
}
if(brw_v >= 4 && brw_n == "N") {
	iNN4 = true;
}

var Laymax = 0;		//メニュー総数
var menuOffset = 0;		//メニューのオフセット
var ImgOffset = 0;		//メニューの前にあるイメージ数

var Lflag = false;
var Cflag = false;
var ImgLayOut = new Array();
var ImgLayOn = new Array();

function Init_main() {
	Laymax = 6;
	menuOffset = 1;
	ImgOffset = 1;

	for(i = 0; i < Laymax; i++) {
		ImgCheck(i);
		ImgLayOut[i + 1] = new Image();
		ImgLayOn[i + 1] = new Image();
		ImgLayOut[i + 1].src = "./image/menu_0" + i + "a.jpg"
		ImgLayOn[i + 1].src = "./image/menu_0" + i + "b.jpg"
		if(Cflag) {
			document.images[i + ImgOffset].src = ImgLayOut[i + 1].src;
		}
	}
	Lflag = true;
}

function Init_main2() {
	Laymax = 5;
	menuOffset = 0;
	ImgOffset = 2;

	for(i = 1; i <= Laymax; i++) {
		ImgCheck(i);
		ImgLayOut[i] = new Image();
		ImgLayOn[i] = new Image();
		ImgLayOut[i].src = "./image/topmenu_0" + i + "a.jpg"
		ImgLayOn[i].src = "./image/topmenu_0" + i + "b.jpg"
		if(Cflag) {
			document.images[i + ImgOffset - 1].src = ImgLayOut[i].src;
		}
	}
	Lflag = true;
}

function MouseON(n) {
	ImgCheck(n);
	if(Cflag) {
		document.images[n + menuOffset + ImgOffset - 1].src = ImgLayOn[n + menuOffset].src;
	}
}

function MouseOUT(n) {
	ImgCheck(n);
	if(Cflag) {
		document.images[n + menuOffset + ImgOffset - 1].src = ImgLayOut[n + menuOffset].src;
	}
}

function ImgCheck(n) {
	Cflag = true;
	if(n < 0 || n > Laymax) {
		Cflag = false;
	}
}