function toggleList(i) {
     toggleListI(document.getElementById('nav'+i));
}
function toggleListI(list) {
     var ul = list.getElementsByTagName('ul')[0];
     var img = list.getElementsByTagName('img')[0];
     if (ul.style.display == 'none') {
          ul.style.display = '';
          img.alt = '-';
          img.src = 'img/minus-bullet.gif';
     } else {
          ul.style.display = 'none';
          img.alt = '+';
          img.src = 'img/plus-bullet.gif';
     }
}
function toggleStart() {
     var sidebar = document.getElementById('sidebarul');
     var sidebarc = sidebar.childNodes;
     var sidebarl = sidebarc.length;
     for (var i=0, nav = 1; i<sidebarl; i++) {
          var child = sidebarc[i];
          if (child.nodeName == 'LI' && child.childNodes.length && child.getElementsByTagName('ul')[0] && child.getElementsByTagName('img')[0]) {
               toggleListI(child);
               child.id = 'nav'+nav++;
               a = child.getElementsByTagName('a')[0];
               img = child.getElementsByTagName('img')[0];
               a.onkeypress = function(){toggleListI(this.parentNode)};
               img.onkeypress = a.onkeypress;
               a.onclick = a.onkeypress;
               img.onclick = a.onkeypress;
               a.style.cursor = 'pointer';
               img.style.cursor = 'pointer';
          }
     }
}