var effect;function initMenu(){nav_item=$$("#nav li");nav_item.each(function(a){if(!a.hasClassName("current_nav_item")){initListItem(a)}});Effect.DefaultOptions.duration=0.4}function initListItem(a){link=a.getElementsByTagName("a")[0];div=document.createElement("div");div.style.position="absolute";div.style.height="100%";div.style.width="100%";div.style.top="0";div.style.left="0";div.style.display="none";a.appendChild(div);link.onmouseover=appearBackground;link.onmouseout=disappearBackground}function appearBackground(){effect=Effect.Appear(this.parentNode.getElementsByTagName("div")[0])}function disappearBackground(){effect.cancel();Effect.Fade(this.parentNode.getElementsByTagName("div")[0])};