function hideNav(){
		$('#side_nav ul ul').toggle(); 
	}
	function expandNav(target){
		adjustHeight(); 
		$(target + ' ul').slideToggle(500); 		 
		$(target).toggleClass('expanded');
	}
	function adjustHeight(){
		var interior_height = $('#interior').height();
		var side_nav_height = $('#side_nav').height();
		
		if(interior_height > side_nav_height){
			$('#side_nav').height(interior_height);
			$('#interior').height(interior_height);
		} else {
			$('#interior').height(side_nav_height);
			$('#side_nav').height(side_nav_height)
		}
	}

$(document).ready(function(){
	$('#side_nav .expander').click(function(e){
		e.preventDefault();
		$(this).next().slideToggle(500);
		$(this).parent().toggleClass('expanded'); 
	});
	/* This will run it twice on the product pages, but that should be fine. */
	adjustHeight();
});