menuOn = new Array();
	menuOff = new Array();
	
	for (i=1; i<=9; i++) {
		menuOn[i] = new Image();
		menuOff[i] = new Image();
		menuOn[i].src = "images/menu" + i + "on.gif";
		menuOff[i].src = "images/menu" + i + ".gif";
	}

function changeMenu(act,num,main) { 
    if (document.images) { 
        if (act) {
            document.images["menuImg"+num].src = menuOn[num].src;
            if (main) {
                document.images["menuImg0"].src = "images/main2.jpg";
            }
        } else {
            document.images["menuImg"+num].src = menuOff[num].src;
            if (main) {
                document.images["menuImg0"].src = "images/main1.jpg";
            }
        }
    }
}