function Picture_Popup(img_src, img_width, img_height, img_title, img_author) {
win_width = parseInt(img_width)+20;
win_height = parseInt(img_height)+60;
popup=window.open('', 'Neues_Fenster', 'width='+win_width+', height='+win_height+', scrollbars=no,buttons=no,statusbar=no,location=no,resizable=no' );
popup.document.writeln(' '+img_title+'
');
}