// the timeout for the menu
var timeout = 1000;

// not very clean but simple
// the function can be run in the HTML for faster display
// window.onload=initMenu;

// creat timeout variables for list item
// it's for avoid some warning with IE
for( var i = 0; i < 100; i++ )
{
		eval("var timeoutli" + i + " = false;");
}

function cacheMenu(id)
{
	var i = 0;
	while (document.getElementById(id).getElementsByTagName('ul')[i])
	{
		document.getElementById(id).getElementsByTagName('ul')[i].style['visibility'] = 'hidden';
		i++
	}
}



// this fonction apply the CSS style and the event
function initMenu( menuId, menuClass )
{
	// a test to avoid some browser like IE4, Opera 6, and IE Mac
	if ( browser.isDOM1 
	&& !( browser.isMac && browser.isIE ) 
	&& !( browser.isOpera && browser.versionMajor < 7 )
	&& !( browser.isIE && browser.versionMajor < 5 ) )
	{
		// get some element
		var menu = document.getElementById(menuId); // the root element
		var lis = menu.getElementsByTagName('li'); // all the li
		// change the class name of the menu, 
		// it's usefull for compatibility with old browser
		menu.className=menuClass;		
		// 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 )
			{				
			// Je cheche l'url dans les li.a.href (by goltog)
//			alert ('toto');
			if (lis.item(i).href==document.location) lis.item(i).className = 'on';
			
			var las = lis.item(i).getElementsByTagName('a')
			for ( var j=0; j<las.length; j++ )
				if ((las.item(j).href==document.location) && (j == 0))
					lis.item(i).className = 'on';					
			// MODIF A FAIRE : NE PAS	PROPAGER VERS LE BAS MAIS VERS LE HAUT (TROUVER L'ANCETRE)


				// improve IE key navigation
				if ( browser.isIE )
					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).setAttribute( 'id', "li"+i );
			}
		}
	}
}

function addAnEvent( target, eventName, functionName )
{
	// apply the method to IE
	if ( browser.isIE )
	{
		//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
	eval( "timeout" + this.id + " = window.setTimeout('hideUlUnder( \"" + this.id + "\" )', " + timeout + " );");
}

// hide the ul elements under the element identified by id
function hideUlUnder( id )
{
	document.getElementById(id).getElementsByTagName('ul')[0].style['visibility'] = 'hidden';
}

// show the first ul element found under this element
function show()
{
	// show the sub menu
	this.getElementsByTagName('ul')[0].style['visibility'] = 'visible';
	var currentNode=this;
	while(currentNode)
	{
		if( currentNode.nodeName=='LI')
		{
			currentNode.getElementsByTagName('a')[0].className = 'linkOver';
		}
	currentNode=currentNode.parentNode;
	}
	// clear the timeout
	eval ( "clearTimeout( timeout"+ this.id +");" );
	hideAllOthersUls( this );
}

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

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