function rolloverMenu(button)
	{
		if (document.images) {
			document.images['menu' + button].src = eval('menu' + button + 'Ovr').src;
		}
	}
	
	function rolloutMenu($button)
	{
		if (document.images) {
			document.images['menu' + $button].src = eval('menu' + $button).src;
		}
	}	
var menu0 = new Image(); menu0.src = "images/menu/portfolio.gif";
var menu0Ovr = new Image(); menu0Ovr.src = "images/menu/portfolio_ovr.gif";
var menu1 = new Image(); menu1.src = "images/menu/prices.gif";
var menu1Ovr = new Image(); menu1Ovr.src = "images/menu/prices_ovr.gif";
var menu2 = new Image(); menu2.src = "images/menu/about.gif";
var menu2Ovr = new Image(); menu2Ovr.src = "images/menu/about_ovr.gif";
var menu3 = new Image(); menu3.src = "images/menu/contact.gif";
var menu3Ovr = new Image(); menu3Ovr.src = "images/menu/contact_ovr.gif";