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
		celsiorOn = new Image();
		celsiorOn.src = "img/car_celsior_over.jpg";
		progresOn = new Image();
		progresOn.src = "img/car_progres_over.jpg";
		markxOn = new Image();
		markxOn.src = "img/car_markx_over.jpg";
		premioOn = new Image();
		premioOn.src = "img/car_premio_over.jpg";
		priusOn = new Image();
		priusOn.src = "img/car_prius_over.jpg";
		beltaOn = new Image();
		beltaOn.src = "img/car_belta_over.jpg";
		ipsumOn = new Image();
		ipsumOn.src = "img/car_ipsum_over.jpg";
		alphardgOn = new Image();
		alphardgOn.src = "img/car_alphardg_over.jpg";
		alphard_hbOn = new Image();
		alphard_hbOn.src = "img/car_alphard_hb_over.jpg";
		mark2_blitOn = new Image();
		mark2_blitOn.src = "img/car_mark2_blit_over.jpg";
		caldinaOn = new Image();
		caldinaOn.src = "img/car_caldina_over.jpg";
		succeed_wagonOn = new Image();
		succeed_wagonOn.src = "img/car_succeed_wagon_over.jpg";
		bladeOn = new Image();
		bladeOn.src = "img/car_blade_over.jpg";
		porteOn = new Image();
		porteOn.src = "img/car_porte_over.jpg";
		ractisOn = new Image();
		ractisOn.src = "img/car_ractis_over.jpg";
		harrierOn = new Image();
		harrierOn.src = "img/car_harrier_over.jpg";
		ipsumOn = new Image();
		ipsumOn.src = "img/car_ipsum_over.jpg";
		harrierOn = new Image();
		harrierOn.src = "img/car_harrier_over.jpg";
		harrier_hbOn = new Image();
		harrier_hbOn.src = "img/car_harrier_hb_over.jpg";
		rushOn = new Image();
		rushOn.src = "img/car_rush_over.jpg";
		hiaceOn = new Image();
		hiaceOn.src = "img/car_hiace_over.jpg";
		succeed_vanOn = new Image();
		succeed_vanOn.src = "img/car_succeed_van_over.jpg";
		comfortOn = new Image();
		comfortOn.src = "img/car_comfort_over.jpg";
		
// メニュー
		celsiorOff = new Image();
		celsiorOff.src = "img/car_celsior.jpg";
		progresOff = new Image();
		progresOff.src = "img/car_progres.jpg";
		markxOff = new Image();
		markxOff.src = "img/car_markx.jpg";
		premioOff = new Image();
		premioOff.src = "img/car_premio.jpg";
		priusOff = new Image();
		priusOff.src = "img/car_prius.jpg";
		beltaOff = new Image();
		beltaOff.src = "img/car_belta.jpg";
		ipsumOff = new Image();
		ipsumOff.src = "img/car_ipsum.jpg";
		alphardgOff = new Image();
		alphardgOff.src = "img/car_alphardg.jpg";
		alphard_hbOff = new Image();
		alphard_hbOff.src = "img/car_alphard_hb.jpg";
		mark2_blitOff = new Image();
		mark2_blitOff.src = "img/car_mark2_blit.jpg";
		caldinaOff= new Image();
		caldinaOff.src = "img/car_caldina_over.jpg";
		succeed_wagonOff = new Image();
		succeed_wagonOff.src = "img/car_succeed_wagon.jpg";
		bladeOff = new Image();
		bladeOff.src = "img/car_blade.jpg";
		porteOff = new Image();
		porteOff.src = "img/car_porte.jpg";
		ractisOff = new Image();
		ractisOff.src = "img/car_ractis.jpg";
		harrierOff = new Image();
		harrierOff.src = "img/car_harrier.jpg";
		ipsumOff = new Image();
		ipsumOff.src = "img/car_ipsum.jpg";
		harrierOdd = new Image();
		harrierOdd.src = "img/car_harrier.jpg";
		harrier_hbOff = new Image();
		harrier_hbOff.src = "img/car_harrier_hb.jpg";
		rushOff = new Image();
		rushOff.src = "img/car_rush.jpg";
		hiaceOff = new Image();
		hiaceOff.src = "img/car_hiace.jpg";
		succeed_vanOff = new Image();
		succeed_vanOff.src = "img/car_succeed_van.jpg";
		comfortOff = new Image();
		comfortOff.src = "img/car_comfort.jpg";
		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();
}