function menuOver(menu, name){
	if (menu.className != "menu_selected")
	{
		menu.className = "menu_over";
	}
    showSubmenu(name);
}

function menuOut(menu, image){
	if (menu.className != "menu_selected")
	{
		menu.className = "menu";
	}
	hideSubmenu(image);
}

function gotoUrl(url) {
    location.href = url;
}

function preloadPics() {
    document.preload = new Array();
    if(document.images){
        for(var i=0; i < arguments.length; i++) {
            document.preload[i] = new Image();
            document.preload[i].src = arguments[i];
        }
    }
}

preloadPics(
    'images/menu/about_us_home.gif',
    'images/menu/about_us_home_hover.gif',
    'images/menu/contact_us.gif',
    'images/menu/contact_us_hover.gif',
    'images/menu/portfolio_home.gif',
    'images/menu/portfolio_home_hover.gif',
    'images/menu/services_home.gif',
    'images/menu/services_home_hover.gif'
);