$(document).ready(function()
{
// First we hide all exhibitis 
$("#menu ul li.section-title").nextAll().hide();

// then the active exhibit is showed
$("#menu ul").each(function()
{
$(this).find("li.active").prevAll().nextAll().show();
});

// This is the toggle function
// first it hides all sections
$("#menu ul li.section-title").click(function()
{
$("#menu ul li.section-title").nextAll().hide();
$(this).nextAll().slideToggle("fast");
});
	
});