//http://pixelcarnage.net/articles/development/jquery-collapsible-menu/
//slightly modified

$(document).ready(function() {
	// Collapse everything but the first menu:
	$("#Menu > li > a").find("+ ul").slideUp(1);
	$("#section_open").slideDown(1);
	
	// Expand or collapse:
	$("#Menu > li > a").click(function() {
		$(this).find("+ ul").slideToggle("fast");
	});
});