/*	Expanding Menus for Indexhibit
 *		uses jquery
 *
 *	Created by Ross Cairns  Mar 2008
*/


function expandingMenu(num) {
	var speed = 500;
	
	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"}).toggle(
		function () {
			items.show(speed);
		}, function () {
	//		items.hide(speed);
		}
	)
}

function getActiveItemNumber() {
	var items = $("#menu ul");
	var itemNumber = -1;
	for(var i=0;i<items.length; i=i+1){
		var itm = items.eq(i);
		if (itm.children().is(".active") == true) {
			itemNumber = i;
		}
	}
	return itemNumber;
}

function expand(num){
	expandMenuItem(num);
	hideOtherMenuChildren(num);
}

function expandMenuItem(num){
	var speed = 500;
	var items = $("#menu ul").eq(num).children().filter(function (index) { return index > 0; });
	items.show(speed);
}

function hideOtherMenuChildren(num) {
	// var menu_items = $("#menu ul");
	var hidden_menu_items = $("#menu ul").filter(function(index) { return index != num; });
	for(var i=0;i<hidden_menu_items.length;i=i+1){	
		var children = hidden_menu_items.eq(i).children().filter(function (index) { return index > 0; });;
		children.hide();
	}
}

// hide all menus that are not active... 

function hideAllButActive(){
	hideOtherMenuChildren(getActiveItemNumber());
}