YAHOO.util.Event.onContentReady("nav", function () {
var ua = YAHOO.env.ua,
oAnim;  // Animation instance
function onSubmenuBeforeShow(p_sType, p_sArgs) {
var oBody,
oElement,
oShadow,
oUL;
if (this.parent) {
oElement = this.element;
oShadow = oElement.lastChild;
oShadow.style.height = "0px";
if (oAnim && oAnim.isAnimated()) {
    oAnim.stop();
    oAnim = null;
}
oBody = this.body;
if (this.parent && 
    !(this.parent instanceof YAHOO.widget.MenuBarItem)) {
    if (ua.gecko) {
        oBody.style.width = oBody.clientWidth + "px";
    }
    if (ua.ie == 7) {
        oElement.style.width = oElement.clientWidth + "px";
    }
}
oBody.style.overflow = "hidden";
oUL = oBody.getElementsByTagName("ul")[0];
oUL.style.marginTop = ("-" + oUL.offsetHeight + "px");
}
}
function onTween(p_sType, p_aArgs, p_oShadow) {
if (this.cfg.getProperty("iframe")) {
this.syncIframe();
}
if (p_oShadow) {
p_oShadow.style.height = this.element.offsetHeight + "px";
}
}
function onAnimationComplete(p_sType, p_aArgs, p_oShadow) {
var oBody = this.body,
oUL = oBody.getElementsByTagName("ul")[0];
if (p_oShadow) {
p_oShadow.style.height = this.element.offsetHeight + "px";
}
oUL.style.marginTop = "";
oBody.style.overflow = "";
if (this.parent && 
!(this.parent instanceof YAHOO.widget.MenuBarItem)) {
if (ua.gecko) {
    oBody.style.width = "";
}
if (ua.ie == 7) {
    this.element.style.width = "";
}
}
}
function onSubmenuShow(p_sType, p_sArgs) {
var oElement,
oShadow,
oUL;
if (this.parent) {
oElement = this.element;
oShadow = oElement.lastChild;
oUL = this.body.getElementsByTagName("ul")[0];
oAnim = new YAHOO.util.Anim(oUL, 
    { marginTop: { to: 0 } },
    .5, YAHOO.util.Easing.easeOut);
oAnim.onStart.subscribe(function () {
    oShadow.style.height = "100%";
});
oAnim.animate();
if (YAHOO.env.ua.ie) {
    oShadow.style.height = oElement.offsetHeight + "px";
    oAnim.onTween.subscribe(onTween, oShadow, this);
}
oAnim.onComplete.subscribe(onAnimationComplete, oShadow, this);
}
}
var oMenuBar = new YAHOO.widget.MenuBar("nav", { 
                                    autosubmenudisplay: true, 
                                    hidedelay: 55750,
                                    lazyload: true 
									});
oMenuBar.subscribe("beforeShow", onSubmenuBeforeShow);
oMenuBar.subscribe("show", onSubmenuShow);
oMenuBar.render();    
});