function showRootMenuButton(parentNodeId) {
  var rootMenuButton = document.getElementById(parentNodeId).getElementsByTagName('a');
  rootMenuButton[0].style.backgroundPosition = '0px 0px';
  if (parentNodeId!='Newsmenu') { //saves few bits for keeping this image original size and jpeg as it doesn't neet to be raised (shadow of -14px)
    rootMenuButton[0].style.left = '-14px';
  }
  rootMenuButton[0].style.width = (document.getElementById(parentNodeId).offsetWidth + 14) + 'px';
}

function hideRootMenuButton(parentNodeId) {
  var rootMenuButton = document.getElementById(parentNodeId).getElementsByTagName('a');
  rootMenuButton[0].style.backgroundPosition = '0px -50px';
  rootMenuButton[0].style.left = '0px';
  rootMenuButton[0].style.width = document.getElementById(parentNodeId).offsetWidth + 'px';
}

function showHideComments() {
  var commentsUl = document.getElementById('comments');
  if (commentsUl.style.display == 'none' || commentsUl.style.display == '') {
    commentsUl.style.display = 'block';
  } else {
    commentsUl.style.display = 'none';
  }
}