var hiddenImages = new Array();
var hiddenImage = new Object();

function onLoad() {
  var toLoad = ['about', 'hist', 'perf', 'media', 'links', 'recruits', 'parents', 'alumni', 'members', 'donate'];
  for (var i=0; i < toLoad.length; i++) {
    var img = document.getElementById(toLoad[i]).cloneNode(false);
    img.src = 'images/front_over/front_bg_' + toLoad[i] + '.gif';
    hiddenImages[i] = img;
  }
}

function mouseOver(id) {
  var original = document.getElementById(id);
  hiddenImage.src = original.src;
  hiddenImage.img = original;
  original.src = 'images/front_over/front_bg_' + id + '.gif';
}

function mouseOut() {
  hiddenImage.img.src = hiddenImage.src;
}