function Fenster(URL, x, y) {
   window.open(URL,"Birresborn","scrollbars=yes,width="+x+",height="+y);
}

function FotoFenster(URL, x, y) {
   window.open(URL,"BirresbornFoto","scrollbars=no,width="+x+",height="+y);
}

function WerbeFenster(URL, x, y) {
   window.open(URL,"BirresbornWerbung","scrollbars=no,width="+x+",height="+y);
}