if (document.images) {
	//main menu-site
	var load = "no";
	img1off = new Image(); img1off.src = "/img/menu/1_off.gif";
	img2off = new Image(); img2off.src = "/img/menu/2_off.gif";
	img3off = new Image(); img3off.src = "/img/menu/3_off.gif";
	img4off = new Image(); img4off.src = "/img/menu/4_off.gif";
	img5off = new Image(); img5off.src = "/img/menu/5_off.gif";
	img1on = new Image(); img1on.src = "/img/menu/1_on.gif";
	img2on = new Image(); img2on.src = "/img/menu/2_on.gif";
	img3on = new Image(); img3on.src = "/img/menu/3_on.gif";
	img4on = new Image(); img4on.src = "/img/menu/4_on.gif";
	img5on = new Image(); img5on.src = "/img/menu/5_on.gif";
	load="yes";
}
function imageOff(imgName) {
	if (load == "yes") {
		if (document.images) {
		document.images[imgName].src = eval(imgName + "off.src");
		}
	}
}
function imageOn(imgName) {
	if (load == "yes") {
		if (document.images) {
			document.images[imgName].src = eval(imgName + "on.src");
		}
	}
}