if (document.images) {

  image1on = new Image();
  image1on.src = "/images/nav/home_on.jpg";

  image2on = new Image();
  image2on.src = "/images/nav/realestate_on.jpg";

  image3on = new Image();
  image3on.src = "/images/nav/featured_on.jpg";

  image4on = new Image();
  image4on.src = "/images/nav/romick_prop_on.jpg";

  image5on = new Image();
  image5on.src = "/images/nav/search_on.jpg";
  
  //image6on = new Image();
  //image6on.src = "/images/nav/creekranch_on.jpg";
  
  image7on = new Image();
  image7on.src = "/images/nav/trout_on.jpg";
  
  image8on = new Image();
  image8on.src = "/images/nav/about_on.jpg";

  image9on = new Image();
  image9on.src = "/images/nav/contact_on.jpg";

  image10on = new Image();
  image10on.src = "/images/nav/lastchance_on.jpg";

  image11on = new Image();
  image11on.src = "/images/nav/vista_on.jpg";

  image12on = new Image();
  image12on.src = "/images/nav/development_on.jpg";

  image13on = new Image();
  image13on.src = "/images/nav/mantle_on.jpg";

  image14on = new Image();
  image14on.src = "/images/nav/history_on.jpg";

  image15on = new Image();
  image15on.src = "/images/nav/links_on.jpg";

  image16on = new Image();
  image16on.src = "/images/nav/slatecreek_on.jpg";

  image17on = new Image();
  image17on.src = "/images/nav/yrhqranch_on.jpg";

  image1off = new Image();
  image1off.src = "/images/nav/home_off.jpg";
  
  image2off = new Image();
  image2off.src = "/images/nav/realestate_off.jpg";
  
  image3off = new Image();
  image3off.src = "/images/nav/featured_off.jpg";
  
  image4off = new Image();
  image4off.src = "/images/nav/romick_prop_off.jpg";
  
  image5off = new Image();
  image5off.src = "/images/nav/search_off.jpg";
  
  //image6off = new Image();
  //image6off.src = "/images/nav/creekranch_off.jpg";
  
  image7off = new Image();
  image7off.src = "/images/nav/trout_off.jpg";
  
  image8off = new Image();
  image8off.src = "/images/nav/about_off.jpg";
  
  image9off = new Image();
  image9off.src = "/images/nav/contact_off.jpg";

  image10off = new Image();
  image10off.src = "/images/nav/lastchance_off.jpg";
  
  image11off = new Image();
  image11off.src = "/images/nav/vista_off.jpg";
 
  image12off = new Image();
  image12off.src = "/images/nav/development_off.jpg";
  
  image13off = new Image();
  image13off.src = "/images/nav/mantle_off.jpg";

  image14off = new Image();
  image14off.src = "/images/nav/history_off.jpg";

  image15off = new Image();
  image15off.src = "/images/nav/links_off.jpg";

  image16off = new Image();
  image16off.src = "/images/nav/slatecreek_off.jpg";

  image17off = new Image();
  image17off.src = "/images/nav/yrhqranch_off.jpg";

}
function turnOn(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "on.src");
  }
}

function turnOff(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "off.src");
  }
}