function do_atis( url, width, height, size_scroll,menu ) {
   if ( width != "") {
      width = "width=" + width + ","
   }
   if ( height != "") {
      height = "height=" + height + ","
   }
   if ( size_scroll == "no" ) {
      features = width + height + "location=no,menubar=no,status=no,toolbar=no,resizable=no,scrollbars=no"
   }
   if ( menu = "yes" ) {
	features = width + height + "location=no,menubar=no,status=no,toolbar=yes,resizable=yes,scrollbars=yes"
   }
   else {
      features = width + height + "location=no,menubar=no,status=no,toolbar=no,resizable=yes,scrollbars=yes"
   }
   window.open( url, "atis", features )
}