I am unable to get this event to fire:

  $("#about").click(function()
  {  //I have put alert("foo") here, won't fire
    $("#about_stuff").toggle();
  });

snip

   <li ><a href="#a" id="about">About</a>

I've tested the toggle line in Firebug and it successfully works - I am at my wits end, I've checked it against multiple examples and it persistently refuses to work.