function preload() {
	var prearr = new Array("img/menu/menu-over_03.gif", "img/menu/menu-over_04.gif", "img/menu/menu-over_05.gif", "img/menu/menu-over_06.gif", "img/menu/menu-over_07.gif");
	var imgarr = new Array();
	for (i=0; i<prearr.length; i++) {
		imgarr[i] = new Image();
		imgarr[i].src = prearr[i];
	}
}
preload();
function menuover(i) {
	var tar = "menu_0" + i;
	var src = "img/menu/menu-over_0" + i + ".gif";
	document.getElementById(tar).src = src;
}
function menuout(i) {
	var tar = "menu_0" + i;
	var src = "img/menu/menu_0" + i + ".gif";
	document.getElementById(tar).src = src;
}