function switchon(objekt, objektDelay) {
	new Effect.Opacity(objekt, { from: 0, to: 1, duration: 0.2, delay: objektDelay});
}
function switchoff() {
	$('aktuell').setOpacity(0); $('aktuell').style.visibility = 'visible';
	$('neuwagen').setOpacity(0); $('neuwagen').style.visibility = 'visible';
	$('gebrauchtwagen').setOpacity(0); $('gebrauchtwagen').style.visibility = 'visible';
	$('service').setOpacity(0); $('service').style.visibility = 'visible';
	$('teile').setOpacity(0); $('teile').style.visibility = 'visible';
	$('autogas').setOpacity(0); $('autogas').style.visibility = 'visible';
	$('anfahrt').setOpacity(0); $('anfahrt').style.visibility = 'visible';
}
function menu_rendern() {
	switchoff();
	switchon('aktuell', 0)
	switchon('neuwagen', 0)
	switchon('gebrauchtwagen', 0)
	switchon('service', 0)
	switchon('teile', 0)
	switchon('autogas', 0)
	switchon('anfahrt', 0)
}