if (document.images) {

  index_01on = new Image();
  index_01on.src = "assets/images/nav/index_01_on.jpg";
  index_02on = new Image();
  index_02on.src = "assets/images/nav/index_02_on.jpg";
  index_03on = new Image();
  index_03on.src = "assets/images/nav/index_03_on.jpg";
  index_04on = new Image();
  index_04on.src = "assets/images/nav/index_04_on.jpg";
  index_05on = new Image();
  index_05on.src = "assets/images/nav/index_05_on.jpg";
  
  index_01off = new Image();
  index_01off.src = "assets/images/nav/index_01_off.jpg";
  index_02off = new Image();
  index_02off.src = "assets/images/nav/index_02_off.jpg";
  index_03off = new Image();
  index_03off.src = "assets/images/nav/index_03_off.jpg";
  index_04off = new Image();
  index_04off.src = "assets/images/nav/index_04_off.jpg";
  index_05off = new Image();
  index_05off.src = "assets/images/nav/index_05_off.jpg";
  
  
  nav_00on = new Image();
  nav_00on.src = "assets/images/nav/nav_00_ov.jpg";
  nav_01on = new Image();
  nav_01on.src = "assets/images/nav/nav_01_ov.jpg";
  nav_02on = new Image();
  nav_02on.src = "assets/images/nav/nav_02_ov.jpg";
  nav_03on = new Image();
  nav_03on.src = "assets/images/nav/nav_03_ov.jpg";
  nav_04on = new Image();
  nav_04on.src = "assets/images/nav/nav_04_ov.jpg";
  nav_05on = new Image();
  nav_05on.src = "assets/images/nav/nav_05_ov.jpg";
  
  nav_00off = new Image();
  nav_00off.src = "assets/images/nav/nav_00_off.jpg";
  nav_01off = new Image();
  nav_01off.src = "assets/images/nav/nav_01_off.jpg";
  nav_02off = new Image();
  nav_02off.src = "assets/images/nav/nav_02_off.jpg";
  nav_03off = new Image();
  nav_03off.src = "assets/images/nav/nav_03_off.jpg";
  nav_04off = new Image();
  nav_04off.src = "assets/images/nav/nav_04_off.jpg";
  nav_05off = new Image();
  nav_05off.src = "assets/images/nav/nav_05_off.jpg";

}

function rld() { document.location.reload() }

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");
    }
  }
}