if(document.images) {
	var imgs = new Array();
	imgs[01] = new Image();  imgs[01].src = "images/t_menu01.jpg";
	imgs[02] = new Image();  imgs[02].src = "images/t_menu01_on.jpg";
	imgs[03] = new Image();  imgs[03].src = "images/t_menu02.jpg";
	imgs[04] = new Image();  imgs[04].src = "images/t_menu02_on.jpg";
	imgs[05] = new Image();  imgs[05].src = "images/t_menu03.jpg";
	imgs[06] = new Image();  imgs[06].src = "images/t_menu03_on.jpg";
	imgs[07] = new Image();  imgs[07].src = "images/t_menu04.jpg";
	imgs[08] = new Image();  imgs[08].src = "images/t_menu04_on.jpg";
	imgs[09] = new Image();  imgs[09].src = "images/t_menu05.jpg";
	imgs[10] = new Image();  imgs[10].src = "images/t_menu05_on.jpg";
	imgs[11] = new Image();  imgs[11].src = "images/btn_map.gif";
	imgs[12] = new Image();  imgs[12].src = "images/btn_map_on.gif";
	imgs[13] = new Image();  imgs[13].src = "images/btn_eng.gif";
	imgs[14] = new Image();  imgs[14].src = "images/btn_eng_on.gif";
}
function chgimg(id, imgname) {
	if(document.images) {
		if(imgs[imgname]) {
			document.images[id].src = imgs[imgname].src;
		}else {
			document.images[id].src = imgname;
		}
	}
}