function initMouseOverImages() {
  var image_cache = new Object();
  $("img.swap").each(function(i) {
    var imgsrc = this.src;
    var dot = this.src.lastIndexOf('.');
    var imgsrc_on = this.src.substr(0, dot) + '_on' + this.src.substr(dot, 4);
    image_cache[this.src] = new Image();
    image_cache[this.src].src = imgsrc_on;
    $(this).hover(
      function() { this.src = imgsrc_on; },
      function() { this.src = imgsrc; });
  });
}

function initOpenNewWindow() {
  var popupEvent = function(event) {
    var option = this.href.replace(/^[^\?]+\??/,'').replace(/&/g, ',');
    window.open(this.href, this.rel, option).focus();
    event.preventDefault();
  }
  $("a.popup").each(function(i) {
      $(this).click(popupEvent);
      $(this).keypress(popupEvent);
  });
}