function lightbox_show(id){
	document.getElementById('lightbox').style.display = 'block';
	
	if(id==1){
		document.getElementById('overlay_impressum').style.display = 'block';
	}
	if(id==2){
		document.getElementById('overlay_anfahrt').style.display = 'block';
	}
	
}

function lightbox_hide(){
	document.getElementById('lightbox').style.display = 'none';
	document.getElementById('overlay_impressum').style.display = 'none';
	
	if ($('overlay_anfahrt')) {
		document.getElementById('overlay_anfahrt').style.display = 'none';	
	}
}