var timeout = 200;

// this fonction apply the CSS style and the event
function initMenu(menuId) {
	// a test to avoid some browser like IE4, Opera 6, and IE Mac
	if (Br.DOM) {
		// get some element
		var menu = document.getElementById(menuId); // the root element
		var lis = menu.getElementsByTagName('li'); // all the li

		// i am searching for ul element in li element
		for (var i = 0; i < lis.length; i++) {
			// is there a ul element ?
			if (lis.item(i).getElementsByTagName('ul').length > 0) {
				// improve IE key navigation
				if (Br.IE) addAnEvent(lis.item(i), 'keyup', show);
				// link events to list item

				addAnEvent(lis.item(i), 'mouseover',show);
				addAnEvent(lis.item(i), 'mouseout',timeoutHide);
				addAnEvent(lis.item(i), 'blur',timeoutHide);
				addAnEvent(lis.item(i), 'focus',show);

				// add an id to list item
				lis.item(i).id = "li" + i;
				eval("timeoutli" + i + " = false;");
			}

			if (i == (lis.length - 1)) {
				lis.item(i).parentNode.style.right = '0px';
				lis.item(i).parentNode.style.left = 'auto';
			}
		}
	}
}

function addAnEvent(target, eventName, functionName) {
	// apply the method to IE
	if (Br.IE) {
		//attachEvent dont work properly with this
		eval('target.on'+eventName+'=functionName');
	}
	// apply the method to DOM compliant browsers
	else {
		target.addEventListener(eventName, functionName, true); // true is important for Opera7
	}
}

// hide the first ul element of the current element
function timeoutHide() {
  // start the timeout
	try {
		eval("timeout" + this.id + " = window.setTimeout('hideUlUnder( \"" + this.id + "\" )', " + timeout + ");");
	}
	catch(e) {}
}

// hide the ul elements under the element identified by id
function hideUlUnder( id ) {   
	if (document.getElementById(id)) {
		document.getElementById(id).className = document.getElementById(id).className.replace("sel","");;
		document.getElementById(id).getElementsByTagName('ul')[0].style.visibility = 'hidden';
		SelectHide('visible');
	}
}

// show the first ul element found under this element
function show() {
	// show the sub menu
	this.getElementsByTagName('ul')[0].style.visibility = 'visible';
	// clear the timeout
	SelectHide('hidden');
	this.className+=" sel"; // pro zapamatovani nadrazeneho
	try { if (eval("timeout"+ this.id)) eval ( "clearTimeout( timeout"+ this.id +");" ); } catch(e) {} 
	hideAllOthersUls( this );
}

// hide all ul on the same level of  this list item
function hideAllOthersUls( currentLi ) {
	var ul = currentLi.parentNode;
	for ( var i=0; i<ul.childNodes.length; i++ ) {
		if ( ul.childNodes[i].id && ul.childNodes[i].id != currentLi.id ) {
			hideUlUnderLi( ul.childNodes[i] );
		}
	}
}

// hide all the ul wich are in the li element
function hideUlUnderLi( li ) {
	li.className = li.className.replace("sel","");
  var uls = li.getElementsByTagName('ul');
  for ( var i=0; i<uls.length; i++ ) {
  	uls.item(i).style.visibility = 'hidden';
	}
}