function menucall() {
   with(document) {
      if (screen.height<481) {
        write('<script src="http://www.stratstan.co.uk/scripts/menu640.js" type="text/javascript" ></script>') }
      else {
        if (screen.height<601) {
          write('<script src="http://www.stratstan.co.uk/scripts/menu800.js" type="text/javascript" ></script>') }
        else {
          if (screen.height<769) {
            write('<script src="http://www.stratstan.co.uk/scripts/menu1024.js" type="text/javascript" ></script>') }
          else {
              write('<script src="http://www.stratstan.co.uk/scripts/menu1280.js" type="text/javascript" ></script>') }
               }
             }
           }
         }

menucall()