var NovaWindow;
var Layer = false;

function openwindow(vprogram,vcmd,vwidth,vheight,vR,vB,vL,vT)
{ 
   var Nova_url = vprogram+"?"+vcmd+"+"+vwidth+"+"+vheight+"+"+vR+"+"+vB+"+"+vL+"+"+vT;
    
   Nova_win='width='+vwidth+',height='+vheight+',toolbar=no,location=no,directories=no,' 
   + 'status=no,menubar=no,scrollbars=no'; 
   NovaWindow = window.open(Nova_url,'NovaWindow',Nova_win);
}

function closewindow()
{  if ((NovaWindow != null) && (Layer == true))
   { NovaWindow.close(); }
}