if(document.images) {
	var imgs = new Array();
	imgs[0] = new Image();  imgs[0].src = "image/mainmenu_01_on.gif";
	imgs[1] = new Image();  imgs[1].src = "image/mainmenu_02_on.gif";
	imgs[2] = new Image();  imgs[2].src = "image/mainmenu_03_on.gif";
	imgs[3] = new Image();  imgs[3].src = "image/mainmenu_04_on.gif";
	imgs[4] = new Image();  imgs[4].src = "image/mainmenu_05_on.gif";
	imgs[5] = new Image();  imgs[5].src = "image/mainmenu_06_on.gif";
	imgs[6] = new Image();  imgs[6].src = "image/mainmenu_07_on.gif";
	imgs[7] = new Image();  imgs[7].src = "image/mainmenu_08_on.gif";
	
}