function popUp(folder, bestand, b, h) {
var loc=""+folder+"/"+bestand;
var wLeft = (screen.availWidth-b)/2;
var wTop = (screen.availHeight-h)/2;
var params = 'toolbar=no,scrollbars=no,location=no,status=no,menubar=no,resizable=yes, left='+wLeft+', top='+wTop+', width='+b+',height='+h;
foto = window.open("","foto",params);
foto.document.write(".| Foto - "+bestand+"");
foto.document.write("");
foto.document.write("![]("+loc+")
");
foto.document.write("");
foto.document.close();
}