if (typeof toggleMentions == "undefined")
{
  toggleMentions = function()
  {
    var self = this;
    if (self.knowSettings == undefined)
    {
      self.knowSettings = true;
      self.hideMentions = true;
      self.getTweetsWithMentions = function()
      {
        return $('#timeline>li.status>span.status-body>span.status-content>span.entry-content>a.username').
            parent().parent().parent().parent();
      }
      self.toggle = function()
      {
        if (self.hideMentions)
        {
          self.getTweetsWithMentions().slideUp();
        } else
        {
          self.getTweetsWithMentions().slideDown();
        }
        self.hideMentions = !self.hideMentions;
      }
      self.onPageChange = onPageChange;
      self.calledInternalOnPageChange = false;
      onPageChange = function()
      {
        if (!self.calledInternalOnPageChange)
        {
          self.calledInternalOnPageChange = true;
          self.onPageChange();
        } else
        {
          self.hideMentions = !self.hideMentions;
          self.toggle();
        }
      }
    }
    self.toggle();
  }
}
toggleMentions();