var f=0;
function WD()
{
    if ((f!=0) && (!f.closed)) {
        f.close();
        f=0
    }
}

function Zeige(parm,x,y)
{
    s="top=30,left=30,screenX=30,screenY=30,resizable=no,scrollbars=no,width="+x+",height="+y;
    f=window.open(parm,"popup",s);
    if(f)
        f.focus();
}