/*  Jiøí Raclavský (c) Anagraphix.Cz  */
			
      var agt=navigator.userAgent.toLowerCase();
      var is_major = parseInt(navigator.appVersion);
      var is_ie   = (agt.indexOf("msie") != -1);
      var is_ie3  = (is_ie && (is_major < 4));

      if (document.images) {
        onImages = new Array()
        onImages['obr01'] = new Image()
        onImages['obr01'].src = "menu01on.gif"
        onImages['obr02'] = new Image()
        onImages['obr02'].src = "menu02on.gif"
        onImages['obr03'] = new Image()
        onImages['obr03'].src = "menu03on.gif"
        onImages['obr04'] = new Image()
        onImages['obr04'].src = "menu04on.gif"
        onImages['obr05'] = new Image()
        onImages['obr05'].src = "menu05on.gif"
        onImages['obr06'] = new Image()
        onImages['obr06'].src = "menu06on.gif"

        offImages = new Array()
        offImages['obr01'] = new Image()
        offImages['obr01'].src = "menu01.gif"
        offImages['obr02'] = new Image()
        offImages['obr02'].src = "menu02.gif"
        offImages['obr03'] = new Image()
        offImages['obr03'].src = "menu03.gif"
        offImages['obr04'] = new Image()
        offImages['obr04'].src = "menu04.gif"
        offImages['obr05'] = new Image()
        offImages['obr05'].src = "menu05.gif"
        offImages['obr06'] = new Image()
        offImages['obr06'].src = "menu06.gif"

      }

      function xChange(imageName, newState) {
        if (document.images) {
          if (newState == "on")
              document.images[imageName].src = onImages[imageName].src
          else {
              document.images[imageName].src = offImages[imageName].src
          }
        }
      }