function popupWindow (url,width,height) {
 image_1 = new Image()
 image_1.src = url
 fenster = window.open(url, "fenster1", "width="+width+",height="+height+",status=no,scrollbars=no,resizable=yes");
 fenster.focus();
 //fenster.resizeTo(image_1.width,image_1.height+50);
}