function popup(url){
fensterDetail = window.open(url,'fenster_1','height=550, width=720, scrollbars=1');
fensterDetail.focus();
}


function popup2(url){
fensterDetail = window.open(url,'fenster_2','height=650, width=950, scrollbars=1');
fensterDetail.focus();
}


function popup3(url){
fensterDetail = window.open(url,'fenster_3','height=400, width=450, scrollbars=0');
fensterDetail.focus();
}