/*
Author   : bieler batiste
Company  : doSimple : http://www.dosimple.ch
send me a mail for more informations : faden@PASDEPOURRIELaltern.org - remove ( PASDEPOURRIEL )

Short javascript function to create and handle a CSS navigation menu

Copyright (C) 2004  Bieler Batiste

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

// the timeout for the menu
var timeout = 0;

// 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 < 6; i++ )
{
    eval("var timeoutli" + i + " = false;");
		
	for( var j = 0; j < 30; j++ )
	{
		 eval("var timeoutli" + i + j + " = false;");
	}
}

// this fonction apply the CSS style and the event
function initMenu()
{
    // 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('menu'); // the root element
        //var lis = menu.getElementsByTagName('li'); // all the li
        //var uls = menu.getElementsByTagName('ul'); // all the li
		
        // change the class name of the menu, 
        // it's usefull for compatibility with old browser
        menu.className='menu';
        var cmp=0;
		
        // i am searching for ul element in li element
			if (menu.hasChildNodes())
			{
				var lis = menu.childNodes;

			  for ( var i=0; i<lis.length; i++ )
			  {
					if ( lis[i].nodeName == 'LI')
						{        
							
				// is there a ul element ? i!=2 && i!=7 && i!=10 && i!=15 && i!=22 && i!=27 &&
							var lis2 = lis[i].getElementsByTagName('li');
							for ( var j=0; j<lis2.length; j++ )
							{
								if ( lis2.item(j).getElementsByTagName('ul').length > 0 )
								{
								if ( browser.isIE )
								{
									addAnEvent(lis2.item(j),'keyup',show);
								}
								// link events to list item
								addAnEvent(lis2.item(j),'mouseover',show);
								addAnEvent(lis2.item(j),'mouseout',timeoutHide);
								addAnEvent(lis2.item(j),'blur',show);
								addAnEvent(lis2.item(j),'focus',show);

								lis2.item(j).setAttribute( 'id', "li"+(i)+(j));
								}
							}
						// improve IE key navigation
						if ( browser.isIE )
						{
							addAnEvent(lis[i],'keyup',show);
						}
						// link events to list item
						addAnEvent(lis[i],'mouseover',show);
						addAnEvent(lis[i],'mouseout',timeoutHide);
						addAnEvent(lis[i],'blur',show);
						addAnEvent(lis[i],'focus',show);
											
						// add an id to list item
						lis[i].setAttribute( 'id', "li"+(i-cmp));

						}
						else
						{	
						cmp=cmp+1;
						}
				}
        }
    }
}

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 + " );");
    this.getElementsByTagName('a')[0].className = '';
}

// 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';
	//this.getElementsByTagName('ul')[1].style['visibility'] = 'visible';
	//this.getElementsByTagName('ul')[2].style['visibility'] = 'visible';
	//this.getElementsByTagName('ul')[3].style['visibility'] = 'visible';
	//this.getElementsByTagName('ul')[4].style['visibility'] = 'visible';
    var currentNode=this;
	
    while(currentNode)
    {		
            if( currentNode.nodeName=='LI')
            {
				
				currentNode.getElementsByTagName('a')[0].className = 'linkOver';
				// DAB
				//currentNode.getElementsByTagName('a')[1].className = 'cat1';
				//currentNode.getElementsByTagName('a')[2].className = 'cat2';
				//currentNode.getElementsByTagName('a')[3].className = 'cat3';
				//currentNode.getElementsByTagName('a')[4].className = 'cat4';
				
            }
            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';
    }
}