function setEqualHeight(columns)
{
   var tallestcolumn = 0;
   columns.each(
     function()
     {
       currentHeight = $(this).height();
       if(currentHeight > tallestcolumn)
       {
         tallestcolumn  = currentHeight;
       }
     }
   );
   columns.height(tallestcolumn);
}
  $(document).ready(function() {
   setEqualHeight($("#content  > div"));
	$("ul.level2>.leaf").click(function(e){
		$(".selected+ul.level3").css("display","none");
		$("ul.level1 .selected").removeClass("selected");
		$(this).addClass("selected");
		$(".selected+ul.level3").css("display","block");
	})
  });