var now = new Date();
function today() {
	var today_day = now.getDay();
	if(today_day != 0 && today_day != 6) {
		if(today_day <= 5) {
			document.getElementById('day_'+today_day).style.backgroundImage = "url(http://nexus.advanced.li/Portals/11/Skins/nexus/media/weekmenu/day_"+today_day+".png)";
			document.getElementById('day_'+today_day).style.backgroundRepeat = "no-repeat";
		}
	}
}