/**
 * @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;
        
        var url = unescape(window.location.href);
        var base = window.location.protocol + '//' + window.location.host + window.location.pathname.replace(/[^\/\\]+$/, '');
        
        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)
        {
                for (var i = 0, el_node; 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(/\s+Collection\(([^)]+)\)\s+/i);
                                                if (matches)
                                                {
                                                        matches = matches[1].split(',');
                                                        for (var k = 0; k < matches.length; k++)
                                                        {
                                                                if (/^[\/\\]/.test(matches[k])) matches[k] = window.location.protocol + '//' + window.location.host + matches[k];
                                                                else if (!/^[a-z0-9]+:/i.test(matches[k])) matches[k] = base + matches[k];
                                                                if (unescape(matches[k].replace(/[\/\\]\.([\/\\])/g, '$1').replace(/[^\/\\]+[\/\\]\.\.[\/\\]/g, '')) == url)
                                                                {
                                                                        break;
                                                                }
                                                        }
                                                }
                                        }
                                }
                                if (active)
                                {
                                        el_node.className = 'active';
                                        var el_parentNode = el_node;
                                        do
                                        {
                                                el_parentNode = el_parentNode.parentNode;
                                                if (el_parentNode.nodeName.toLowerCase() == 'ul')
                                                {
                                                        el_parentNode.style.display = 'block';
                                                        if (document.getElementById(this.id) != el_parentNode) el_parentNode.parentNode.className = el_parentNode.parentNode.className.replace(/(^| +)(opened|closed)( +|$)/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));
}