/*
    list menu script by Brothercake (http://www.brothercake.com/)
    you may use the code providing this message remains intact
*/

//trigger initialiser
function menuInitTrigger(menuTrigger)
{
    //null menu object
    var menuMenu = null;

    //moz needs this         //mac/ie5 needs this
    if(menuTrigger.firstChild && menuTrigger.firstChild.nextSibling)
    {
        //get menu object
        menuMenu = menuTrigger.childNodes[2];
    }

    //bind menu mouse-opener
    menuTrigger.onmouseover = function()
    {
        this.menuShowMenu();
    }

    //bind menu mouse-closer
    menuTrigger.onmouseout = function(e)
    {
        this.menuHideMenu(e);
    }

    //menu opening function
    menuTrigger.menuShowMenu = function()
    {
        //rollover
        menuTrigger.firstChild.style.backgroundColor = HoverBgColor;
        menuTrigger.firstChild.style.color = HoverColor;

        //if trigger has menu
        if(menuMenu != null)
        {
            //tweak top position
            menuMenu.style.marginTop = 0+'px'; //0-menuTrigger.offsetHeight+'px';

            //show menu
            menuMenu.style.visibility = 'visible';
        }
    }

    //menu mouse-closing function
    menuTrigger.menuHideMenu = function(e)
    {
        if(!e) { e = window.event; }

        //if event came from outside current trigger branch
        if(!menuTrigger.contains(e.relatedTarget || e.toElement))
        {
            //rollout
            menuTrigger.firstChild.style.backgroundColor = BgColor;
            menuTrigger.firstChild.style.color = Color;

            //if trigger has menu
            if(menuMenu != null)
            {
                //hide menu
                menuMenu.style.visibility = 'hidden';
            }
        }
    }

    //prototyped contains method
    //obviously not necessary for win/ie5, and errs in mac/ie5 anyway
    //not actually necessary for O7 either .. but I'm superstitious
    if(!(menu.macie||menu.winie))
    {
        //contains method by jkd (http://www.jasonkarldavis.com/)
        menuTrigger.contains = function(node)
        {
            if (node == null) { return false; }
            if (node == this) { return true; }
            else { return this.contains(node.parentNode); }
        }
    }
}

//navbar object
function menuNavbar(ulTree)
{
    menu.nav = this;  //object
    menu.tree = ulTree;  //ul tree

    //invalidate markup so it works in win/ie
    if(menu.winie)
    {
        //get inner HTML
        menu.html = menu.tree.innerHTML;

        //replace <li> with <div> to prevent excess margins
        //sorry - I know this invalidates the DOM
        //but invalid markup is the only language it understands ...
        menu.html = menu.html.replace(/<([\/]?)li/ig,'<$1div');

        //write back to tree
        menu.tree.innerHTML = menu.html;
    }

    //get trigger elements
    (menu.xdom) ? menu.tagNames = 'li' : (menu.winie) ? menu.tagNames = 'div' : menu.tagNames = 'li';
    menu.listItems = menu.tree.getElementsByTagName(menu.tagNames);
    menu.listLen = menu.listItems.length;

    //initialise
    for(i=0; i<menu.listLen; i++)
    {
        menuInitTrigger(menu.listItems[i]);
    }
}


var tree = null;  //menu tree
var menu = new Object;  //menu object

//identify support level
menu.ua = navigator.userAgent.toLowerCase();
menu.op6 = (menu.ua.indexOf("opera 6")!=-1||menu.ua.indexOf("opera/6")!=-1)?true:false;
menu.dom = (typeof document.getElementById!="undefined"&&typeof document.createElement!="undefined"&&!menu.op6)?true:false;

//identify win and mac versions of ie
menu.winie = (menu.dom&&typeof document.all!="undefined"&&typeof window.opera=="undefined")?true:false;
menu.macie = (menu.winie&&menu.ua.indexOf("mac")!=-1)?true:false;if(menu.macie){menu.winie=false;}

//identify which DOM were in
//this test may not be 100% reliable ...
menu.xdom = (menu.dom&&typeof document.write=='undefined')?true:false;

//initiate
window.onload = function()
{
    //if browser is supported
    if(menu.dom)
    {
        //tree object
        tree = document.getElementById('Menu');
        if(tree != null)
        {
            //create navbar object
            menu.nav = new menuNavbar(tree)
        }
    }
}