/**
 * @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)
       {
              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;
                            }
                            if (el_node.href && unescape(el_node.href) == unescape(window.location.href))
                            {
                                   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));
}