// popup
function popup(name){
	var breite = 1024;
	var hoehe = 800;
	var posX=(screen.availWidth-breite)/2;
	var posY=(screen.availHeight-hoehe)/2;
    window.open(name,"Fotogalerie", "toolbar=no,width=391,height=290,directories=no,status=no,scrollbars=no,resize=no,resizable=no,menubar=no,screenX=" + posX + ",screenY=" + posY + ",left=" + posX + ",top=" + posY);
}