/**
 * @author Sławomir Kokłowski {@link http://www.kurshtml.boo.pl}
 * @copyright NIE usuwaj tego komentarza! (Do NOT remove this comment!)
 */

function Tree(id)
{
    this.id = id;
    
    this.click = function ()
    {
        for (var i = 0, el_node; i < this.parentNode.childNodes.length; i++)
        {
            el_node = this.parentNode.childNodes.item(i)
            if (el_node.nodeName.toLowerCase() == 'ul')
            {
                el_node.style.display = el_node.style.display == 'none' ? 'block' : 'none';
                this.parentNode.className = this.parentNode.className.replace(/(^| +)(opened|closed)( +|$)/g, ' ') + ' ' + (el_node.style.display == 'none' ? 'closed' : 'opened');
                return;
            }
        }
    }
    
    this.start = function (el)
    {
        var url = unescape(window.location.href);
        var base = window.location.protocol + '//' + window.location.host + window.location.pathname.replace(/[^\/\\]+$/, '');
        for (var i = 0, el_node, re_rel = /\s+Collection\(([^)]+)\)\s+/i, re_root = /^[\/\\]/, re_protocol = /^[a-z0-9]+:/i; i < el.childNodes.length; i++)
        {
            el_node = el.childNodes.item(i);
            if (el_node.nodeName.toLowerCase() == 'a')
            {
                el_node.onclick = this.click;
                for (var j = 0; j < el_node.parentNode.childNodes.length; j++)
                {
                    if (el_node.parentNode.childNodes.item(j).nodeName.toLowerCase() == 'ul')
                    {
                        el_node.parentNode.className += ' closed';
                        el_node.className = (el_node.className ? el_node.className + ' ' : '') + 'folder';
                        break;
                    }
                    if (el_node.parentNode.childNodes.item(j).nodeName.toLowerCase() == 'li') break;
                }
                var active = el_node.href && unescape(el_node.href) == url;
                if (!active)
                {
                    var rel = el_node.getAttribute('rel');
                    if (rel)
                    {
                        var matches = (' ' + rel + ' ').match(re_rel);
                        if (matches)
                        {
                            matches = matches[1].split(',');
                            for (var k = 0; k < matches.length; k++)
                            {
                                if (re_root.test(matches[k])) matches[k] = window.location.protocol + '//' + window.location.host + matches[k];
                                else if (!re_protocol.test(matches[k])) matches[k] = base + matches[k];
                                if (unescape(matches[k]) == url)
                                {
                                    active = true;
                                    break;
                                }
                            }
                        }
                    }
                }
                if (active)
                {
                    el_node.className = 'active';
                    var el_parentNode = el_node;
                    do
                    {
                        el_parentNode = el_parentNode.parentNode;
                        if (el_parentNode.nodeName.toLowerCase() == 'ul')
                        {
                            el_parentNode.style.display = 'block';
                            if (document.getElementById(this.id) != el_parentNode) el_parentNode.parentNode.className = el_parentNode.parentNode.className.replace(/(^| +)(opened|closed)( +|$)/g, ' ') + ' opened';
                        }
                    }
                    while (document.getElementById(this.id) != el_parentNode)
                }
            }
            else if (el_node.nodeName.toLowerCase() == 'ul') el_node.style.display = 'none';
            this.start(el_node);
        }
    }
    
    if (document.getElementById && document.childNodes) this.start(document.getElementById(this.id));
}