function menuPreload(){
	buttons = new Array();
	buttons["menu"] = new Array();
	buttons["menu"][0] = new Image();
	buttons["menu"][1] = new Image();
	buttons["news"] = new Array();
	buttons["news"][0] = new Image();
	buttons["news"][1] = new Image();
	buttons["catering"] = new Array();
	buttons["catering"][0] = new Image();
	buttons["catering"][1] = new Image();
	buttons["menu"][0].src = "images/buttons/menu.jpg";
	buttons["menu"][1].src = "images/buttons/menu-over.jpg";
	buttons["news"][0].src = "images/buttons/whatsnew.jpg";
	buttons["news"][1].src = "images/buttons/whatsnew-over.jpg";
	buttons["catering"][0].src = "images/buttons/catering.jpg";
	buttons["catering"][1].src = "images/buttons/catering-over.jpg";
	if (document.getElementById){
		menuObj = document.getElementById("menubutton");
		menuObj.style.background = 'URL("' + buttons["menu"][0].src + '")';
		cateringObj = document.getElementById("cateringbutton");
		cateringObj.style.background = 'URL("' + buttons["catering"][0].src + '")';
		newsObj = document.getElementById("newsbutton");
		newsObj.style.background = 'URL("' + buttons["news"][0].src + '")';
	}
	return true;
}
function changeImage(imageObj){
	if (document.getElementById){
		buttonObj = document.getElementById(imageObj);
		imageID = imageObj.replace("button","");
		buttonObj.style.background = (buttonObj.style.background.indexOf(buttons[imageID][0].src)>0) ? 'URL("' + buttons[imageID][1].src + '")':'URL("' + buttons[imageID][0].src + '")';
		return true;
	}
	return false;
}