var remote = 0;
function popUpWindow(URL)      {
        if (remote != 0) remote.close();
        remote = window.open(URL,"BUSA_popUp","toolbar=1,location=1,directories=1,status=1,menubar=1,resizable=1,scrollbars=yes,width=800,height=600,screenX=0,screenY=20,left=25,top=100");
        if (remote.opener == null) remote.opener = window; 
        remote.opener.name = "remote";
}