if (document.images) {

  image1on = new Image();
  image1on.src = "../images/nav_search_on.gif";
  
  image2on = new Image();
  image2on.src = "../images/nav_about_on.gif";
  
  image3on = new Image();
  image3on.src = "../images/nav_signup_on.gif";

  image4on = new Image();
  image4on.src = "../images/nav_links_on.gif";

  image5on = new Image();
  image5on.src = "../images/nav_news_on.gif";
  
  image6on = new Image();
  image6on.src = "../images/nav_life_on.gif";

  image7on = new Image();
  image7on.src = "../images/nav_maps_on.gif";

  image8on = new Image();
  image8on.src = "../images/nav_help_on.gif";
  
  image10on = new Image();
  image10on.src = "../images/nav_feedback_on.gif";

  image11on = new Image();
  image11on.src = "../images/nav_fineprint_on.gif";

 
  image1off = new Image();
  image1off.src = "../images/nav_search_off.gif";

  image2off = new Image();
  image2off.src = "../images/nav_about_off.gif";
  
  image3off = new Image();
  image3off.src = "../images/nav_signup_off.gif";

  image4off = new Image();
  image4off.src = "../images/nav_links_off.gif";
  
  image5off = new Image();
  image5off.src = "../images/nav_news_off.gif";

  image6off = new Image();
  image6off.src = "../images/nav_life_off.gif";

  image7off = new Image();
  image7off.src = "../images/nav_maps_off.gif";
  
  image8off = new Image();
  image8off.src = "../images/nav_help_off.gif";
  

  image10off = new Image();
  image10off.src = "../images/nav_feedback_off.gif";

  image11off = new Image();
  image11off.src = "../images/nav_fineprint_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");
    }
  }
}