(function($)
{
	$(function()
	{
		var dirsVisible = false, animDuration = 100;
		$('.dirlist ul').css({display:'none'});
		$('.dirlist .dir').addClass('closed').css({cursor:'pointer'}).click(function()
		{
			$(this).toggleClass('closed').siblings('ul').slideToggle(animDuration);
		});
		$('.dirlist').after('<p class="expandcollapse"><a href="#" id="dirlistToggle">expand/collapse all</a></p>');

		$('#dirlistToggle').click(function()
		{
			if(dirsVisible)
			{
				$('.dirlist ul').slideUp(animDuration).siblings('.dir').addClass('closed');
				dirsVisible = false;
			}
			else
			{
				$('.dirlist ul').slideDown(animDuration).siblings('.dir').removeClass('closed');
				dirsVisible = true;
			}
			return false;
		});
	});
})(jQuery);