function winOpen(url, breite, hoehe) { 

links = (screen.width-breite)/5; 

oben = (screen.height-hoehe)/5; 

window.open(url,"popup","height="+hoehe+", width="+breite+", status = no, toolbar = no, menubar = no, location = no, resizable = no, titlebar = no, scrollbars = no, fullscreen = no, top ="+oben+", left ="+links); 

}