// JavaScript Document

function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

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

var preloadFlag = false;
function preloadImages() {
  if (document.images) {
    nav_01_over = newImage("../images/nav_01_over.gif");
    nav_03_over = newImage("../images/nav_03_over.gif");
    nav_05_over = newImage("../images/nav_05_over.gif");
    nav_07_over = newImage("../images/nav_07_over.gif");
    nav_09_over = newImage("../images/nav_09_over.gif");
    nav_11_over = newImage("../images/nav_11_over.gif");
    nav_13_over = newImage("../images/nav_13_over.gif");
    nav_15_over = newImage("../images/nav_15_over.gif");
    preloadFlag = true;
  }
}