function ScreenSizes() {
   with(document) {
      if (screen.height<481) {
        write('<link rel=stylesheet href="http://www.stratstan.co.uk/style/640.css" type="text/css">') }			
			else {
  			if (screen.height<601) {
          write('<link rel=stylesheet href="http://www.stratstan.co.uk/style/800.css" type="text/css">') }
				else {
					if (screen.height<769) {
					  write('<link rel=stylesheet href="http://www.stratstan.co.uk/style/1024.css" type="text/css">') }
          else {
            write('<link rel=stylesheet href="http://www.stratstan.co.uk/style/1280.css" type="text/css">') }
               }
						 }
           }
         }
ScreenSizes()