var pFenster = null;
function pWindow(datei){

    if (pFenster && pFenster.closed){
        pFenster = null;
    }

    if(!pFenster){
        options = "menubar=1,scrollbars=1,width=800,height=680";
        pFenster=window.open(datei,'pWindow',options);	
        pFenster.focus()
    }
   else{
        pFenster.focus();
   }

}



var hFenster = null;
function hWindow(datei){

    if (hFenster && hFenster.closed){
        hFenster = null;
    }

    if(!hFenster){
        options = "menubar=1,scrollbars=1,width=800,height=680";
        hFenster=window.open(datei,'hWindow',options);	
        hFenster.focus()
    }
   else{
        hFenster.focus();
   }

}



var panoFenster = null;
function panoWindow(datei){

    if (panoFenster && panoFenster.closed){
        panoFenster = null;
    }

    if(!panoFenster){
        options = "menubar=0,scrollbars=0,width=442,height=500";
        panoFenster=window.open(datei,'panoWindow',options);	
        panoFenster.focus()
    }
   else{
        panoFenster.focus();
   }

}