var ua = YAHOO.env.ua, oAnim; 

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 || ua.opera) {
				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 || ua.opera) {
			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 } }, .3, YAHOO.util.Easing.easeOutStrong);
		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 = '';

document.observe('dom:loaded', function() {
	$$('.yui-button').each(function(bottone){
		if(bottone.hasClassName('yui-button-checked')){
			new YAHOO.widget.Button(bottone, {checked:true});
		} else {
			new YAHOO.widget.Button(bottone);
		}
	})
});