function popup(src,width,height,title) { LeftPosition = (screen.width) ? (screen.width-width)/2 : 0; TopPosition = (screen.height) ? (screen.height-height)/2 : 0; var html = "" + title + "" + title + "" popupfenster = open("", "", "width=" + width + ",height=" + height + ",top=" + TopPosition + ",left=" + LeftPosition); inhalt = popupfenster.document; inhalt.open(); inhalt.write(html); inhalt.close(); popupfenster.focus(); }