isIE = (navigator.appName == 'Microsoft Internet Explorer');
isV5 = (parseFloat(navigator.appVersion)>=5.0);

if (document.images) {
	rollOvers = 1;
} else {
	rollOvers = 0;
}

loaded = 0;

function loadImg() {
	if (rollOvers) {
// メニュー
		menu1On = new Image();
		menu1On.src = "../common_img/menu1_over.gif";
		menu2On = new Image();
		menu2On.src = "../common_img/menu2_over.gif";
		menu3On = new Image();
		menu3On.src = "../common_img/menu3_over.gif";
		menu4On = new Image();
		menu4On.src = "../common_img/menu4_over.gif";
		menu5On = new Image();
		menu5On.src = "../common_img/menu5_over.gif";
// サブメニュー
		submenu1_01On = new Image();
		submenu1_01On.src = "../common_img/submenu1_01_over.gif";
		submenu1_02On = new Image();
		submenu1_02On.src = "../common_img/submenu1_02_over.gif";
		submenu1_03On = new Image();
		submenu1_03On.src = "../common_img/submenu1_03_over.gif";
		submenu1_04On = new Image();
		submenu1_04On.src = "../common_img/submenu1_04_over.gif";
		submenu1_05On = new Image();
		submenu1_05On.src = "../common_img/submenu1_05_over.gif";
		submenu3_01On = new Image();
		submenu3_01On.src = "../common_img/submenu3_01_over.gif";
		submenu3_02On = new Image();
		submenu3_02On.src = "../common_img/submenu3_02_over.gif";
		submenu3_03On = new Image();
		submenu3_03On.src = "../common_img/submenu3_03_over.gif";
		submenu4_01On = new Image();
		submenu4_01On.src = "../common_img/submenu4_01_over.gif";
		submenu4_02On = new Image();
		submenu4_02On.src = "../common_img/submenu4_02_over.gif";
		submenu4_03On = new Image();
		submenu4_03On.src = "../common_img/submenu4_03_over.gif";
		submenu4_04On = new Image();
		submenu4_04On.src = "../common_img/submenu4_04_over.gif";
		submenu4_05On = new Image();
		submenu4_05On.src = "../common_img/submenu4_05_over.gif";
		submenu4_06On = new Image();
		submenu4_06On.src = "../common_img/submenu4_06_over.gif";
		submenu4_07On = new Image();
		submenu4_07On.src = "../common_img/submenu4_07_over.gif";
		submenu4_08On = new Image();
		submenu4_08On.src = "../common_img/submenu4_08_over.gif";
		submenu5_01On = new Image();
		submenu5_01On.src = "../common_img/submenu5_01_over.gif";
		submenu5_02On = new Image();
		submenu5_02On.src = "../common_img/submenu5_02_over.gif";
// ヘッダーメニュー
		navi1On = new Image();
		navi1On.src = "../common_img/navi1_over.gif";
		navi2On = new Image();
		navi2On.src = "../common_img/navi2_over.gif";
		navi3On = new Image();
		navi3On.src = "../common_img/navi3_over.gif";
		navi4On = new Image();
		navi4On.src = "../common_img/navi4_over.gif";
		navi5On = new Image();
		navi5On.src = "../common_img/navi5_over.gif";
		navi6On = new Image();
		navi6On.src = "../common_img/navi6_over.gif";
// バナー
		banner1On = new Image();
		banner1On.src = "../common_img/campaign_over.gif";
		banner2On = new Image();
		banner2On.src = "../common_img/coupon_over.gif";

		
// メニュー
		menu1Off = new Image();
		menu1Off.src = "../common_img/menu1.gif";
		menu2Off = new Image();
		menu2Off.src = "../common_img/menu2.gif";
		menu3Off = new Image();
		menu3Off.src = "../common_img/menu3.gif";
		menu4Off = new Image();
		menu4Off.src = "../common_img/menu4.gif";
		menu5Off = new Image();
		menu5Off.src = "../common_img/menu5.gif";
// サブメニュー
		submenu1_01Off = new Image();
		submenu1_01Off.src = "../common_img/submenu1_01.gif";
		submenu1_02Off = new Image();
		submenu1_02Off.src = "../common_img/submenu1_02.gif";
		submenu1_03Off = new Image();
		submenu1_03Off.src = "../common_img/submenu1_03.gif";
		submenu1_04Off = new Image();
		submenu1_04Off.src = "../common_img/submenu1_04.gif";
		submenu1_05Off = new Image();
		submenu1_05Off.src = "../common_img/submenu1_05.gif";
		submenu3_01Off = new Image();
		submenu3_01Off.src = "../common_img/submenu3_01.gif";
		submenu3_02Off = new Image();
		submenu3_02Off.src = "../common_img/submenu3_02.gif";
		submenu3_03Off = new Image();
		submenu3_03Off.src = "../common_img/submenu3_03.gif";
		submenu4_01Off = new Image();
		submenu4_01Off.src = "../common_img/submenu4_01.gif";
		submenu4_02Off = new Image();
		submenu4_02Off.src = "../common_img/submenu4_02.gif";
		submenu4_03Off = new Image();
		submenu4_03Off.src = "../common_img/submenu4_03.gif";
		submenu4_04Off = new Image();
		submenu4_04Off.src = "../common_img/submenu4_04.gif";
		submenu4_05Off = new Image();
		submenu4_05Off.src = "../common_img/submenu4_05.gif";
		submenu4_06Off = new Image();
		submenu4_06Off.src = "../common_img/submenu4_06.gif";
		submenu4_07Off = new Image();
		submenu4_07Off.src = "../common_img/submenu4_07.gif";
		submenu4_08Off = new Image();
		submenu4_08Off.src = "../common_img/submenu4_08.gif";
		submenu5_01Off = new Image();
		submenu5_01Off.src = "../common_img/submenu5_01.gif";
		submenu5_02Off = new Image();
		submenu5_02Off.src = "../common_img/submenu5_02.gif";
// ヘッダーメニュー
		navi1Off = new Image();
		navi1Off.src = "../common_img/navi1.gif";
		navi2Off = new Image();
		navi2Off.src = "../common_img/navi2.gif";
		navi3Off = new Image();
		navi3Off.src = "../common_img/navi3.gif";
		navi4Off = new Image();
		navi4Off.src = "../common_img/navi4.gif";
		navi5Off = new Image();
		navi5Off.src = "../common_img/navi5.gif";
		navi6Off = new Image();
		navi6Off.src = "../common_img/navi6.gif";
// バナー
		banner1Off = new Image();
		banner1Off.src = "../common_img/campaign.gif";
		banner2Off = new Image();
		banner2Off.src = "../common_img/coupon.gif";
		loaded = 1;
	}
}

function switchOn(imgName) {
	if (loaded == 1) {
		imgOn = eval(imgName+"On.src");
		document[imgName].src = imgOn;
	}
}

function switchOff(imgName) {
	if (loaded == 1) {
		imgOff = eval(imgName+"Off.src");
		document[imgName].src = imgOff;
	}
}

if (isIE || isV5) {
	loadImg();
}