function preloadMenuItems() {
	var images = new Array(10);
	images[0] = "./img/menu_0_1.gif";
	images[1] = "./img/menu_1_1.gif";
	images[2] = "./img/menu_2_1.gif";
	images[3] = "./img/menu_3_1.gif";
	images[4] = "./img/menu_4_1.gif";
	images[5] = "./img/menu_5_1.gif";
	images[6] = "./img/menu_6_1.gif";
	images[7] = "./img/menu_7_1.gif";
	images[8] = "./img/menu_8_1.gif";
	images[9] = "./img/menu_9_1.gif";
	
	for (i=0; i < aryImages.length; i++) {
    var preload = new Image();
    preload.src = images[i];
  }
}

function setMenuHighlight(oMenuItem) {
	oMenuItem.getElementsByTagName("img")[0].src = "./img/" + oMenuItem.id + "_1.gif";
}

function removeMenuHighlight(oMenuItem) {
	oMenuItem.getElementsByTagName("img")[0].src = "./img/" + oMenuItem.id + "_0.gif";
}