popup = null;

function zeige_layer(id) 
{
	popup = document.getElementById(id);
	popup.style.display = "block";
}

var letzter;
function bildgal_menu(objectId) {
	if (document.getElementById) {
		d=document.getElementById(objectId)
		if(letzter&&letzter!=d) letzter.style.display = "none";
		if (d.style.display == "block") d.style.display = "none";
		else d.style.display = "block";
		letzter=d;
	}
}