if (document.images) {

  image1on = new Image();
  image1on.src = "img/navmain_1on.gif";
  image2on = new Image();
  image2on.src = "img/navmain_2on.gif";
  image3on = new Image();
  image3on.src = "img/navmain_3on.gif";
  image1off = new Image();
  image1off.src = "img/navmain_1off.gif";
  image2off = new Image();
  image2off.src = "img/navmain_2off.gif";
  image3off = new Image();
  image3off.src = "img/navmain_3off.gif";

  
  image8on = new Image();
  image8on.src = "img/navwine_on.gif";
  image9on = new Image();
  image9on.src = "img/navbeer_on.gif";
  image10on = new Image();
  image10on.src = "img/navother_on.gif";
  image8off = new Image();
  image8off.src = "img/navwine_off.gif";
  image9off = new Image();
  image9off.src = "img/navbeer_off.gif";
  image10off = new Image();
  image10off.src = "img/navother_off.gif";
  
  
}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}