/*	Expanding Menus for Indexhibit
 *		uses jquery
 *
 *	Created by Ross Cairns  Mar 2008
 *      Modified by Justin Ng   Jun 2009
*/

var openItem = -1;

function expandingMenu(num) {
	var speed = 510;
	
	var item_title = $("#menu ul").eq(num).children(":first");
	var items = $("#menu ul").eq(num).children().filter(function (index) { return index > 0; });

	/* hide items if not active */
	if (items.is(".active") == false) {
		items.hide();
	}


	/* add click functions + pointer to title */
	item_title.css({cursor:"pointer"}).click(
		function () {
			if (openItem != num)
			{
				var i;
				for (i=0; i < $("#menu ul").length; i=i+1)
				{
					if (i != num)
					{
						$("#menu ul").eq(i).children().filter(function (index) { return index > 0; }).hide(speed)
					}
				}
				items.show(speed);
				openItem = num;
			}
			else
			{
				items.hide(speed);
				openItem = -1;
			}
		}
	)
}