function oeffne_Fensterbild(bildname,b_width,b_height,f_width,f_height){
doc=window.open("", "fenster", "width="+f_width+",height="+f_height+",menubar=0, status=0,scrollbars=0");
doc.document.open("text/html");
doc.document.write('Bild');
doc.document.write('
');
doc.document.write('
');
doc.document.close();
doc.focus()
}