var img_off = new Array();
var img_on = new Array();

function preload(name,url,url_on){
	img_off[name] = new Image();img_off[name].src = url;
	img_on[name] = new Image();img_on[name].src = url_on;
}

function Mover(num) {
	if(navigator.appVersion.charAt(0) >= "3") {
		document.images[num].src = img_on[num].src;
	}
}

function Mout(num) {
	document.images[num].src = img_off[num].src;
}


//top btn
preload("menu1","img/m01.jpg","img/m01_over.jpg");
preload("menu2","img/m02.jpg","img/m02_over.jpg");
preload("menu3","img/m03.jpg","img/m03_over.jpg");
preload("menu4","img/m04.jpg","img/m04_over.jpg");
preload("menu5","img/m05.jpg","img/m05_over.jpg");