/*

 * Superfish v1.4.8 - jQuery menu widget

 * Copyright (c) 2008 Joel Birch

 *

 * Dual licensed under the MIT and GPL licenses:

 * 	http://www.opensource.org/licenses/mit-license.php

 * 	http://www.gnu.org/licenses/gpl.html

 *

 * CHANGELOG: http://users.tpg.com.au/j_birch/plugins/superfish/changelog.txt

 */



;(function($){

	$.fn.superfish = function(op){



		var sf = $.fn.superfish,

			c = sf.c,

			$arrow = $(['<span class="',c.arrowClass,'"> &#187;</span>'].join('')),

			over = function(){

				var $$ = $(this), menu = getMenu($$);

				clearTimeout(menu.sfTimer);

				$$.showSuperfishUl().siblings().hideSuperfishUl();

			},

			out = function(){

				var $$ = $(this), menu = getMenu($$), o = sf.op;

				clearTimeout(menu.sfTimer);

				menu.sfTimer=setTimeout(function(){

					o.retainPath=($.inArray($$[0],o.$path)>-1);

					$$.hideSuperfishUl();

					if (o.$path.length && $$.parents(['li.',o.hoverClass].join('')).length<1){over.call(o.$path);}

				},o.delay);	

			},

			getMenu = function($menu){

				var menu = $menu.parents(['ul.',c.menuClass,':first'].join(''))[0];

				sf.op = sf.o[menu.serial];

				return menu;

			},

			addArrow = function($a){ $a.addClass(c.anchorClass).append($arrow.clone()); };

			

		return this.each(function() {

			var s = this.serial = sf.o.length;

			var o = $.extend({},sf.defaults,op);

			o.$path = $('li.'+o.pathClass,this).slice(0,o.pathLevels).each(function(){

				$(this).addClass([o.hoverClass,c.bcClass].join(' '))

					.filter('li:has(ul)').removeClass(o.pathClass);

			});

			sf.o[s] = sf.op = o;

			$('li:has(ul)',this)[($.fn.hoverIntent && !o.disableHI) ? 'hoverIntent' : 'hover'](over,out).each(function() {

				if (o.autoArrow ) addArrow( $('>a:first-child',this) );

			})

			.not('.'+c.bcClass)

				.hideSuperfishUl();

			$('.sf-menu li li:last-child >a').css('border-bottom', '2px solid #909090');

			$('.sf-menu li li:has(ul) >a').addClass(c.anchorClass).append($arrow.clone());

			

			var $a = $('a',this);

			$a.each(function(i){

				var $li = $a.eq(i).parents('li');

				$a.eq(i).focus(function(){over.call($li);}).blur(function(){out.call($li);});

			});

			o.onInit.call(this);

			

		}).each(function() {

			menuClasses = [c.menuClass];

			if (sf.op.dropShadows  && !($.browser.msie && $.browser.version < 7)) menuClasses.push(c.shadowClass);

			$(this).addClass(menuClasses.join(' '));

		});

	};



	var sf = $.fn.superfish;

	sf.o = [];

	sf.op = {};

	sf.IE7fix = function(){

		var o = sf.op;

		if ($.browser.msie && $.browser.version > 6 && o.dropShadows && o.animation.opacity!=undefined)

			this.toggleClass(sf.c.shadowClass+'-off');

		};

	sf.c = {

		bcClass     : 'sf-breadcrumb',

		menuClass   : 'sf-js-enabled',

		anchorClass : 'sf-with-ul',

		arrowClass  : 'sf-sub-indicator',

		shadowClass : 'sf-shadow',

		topClass 	: 'sf-top'

	};

	sf.defaults = {

		hoverClass	: 'sfHover',

		pathClass	: 'overideThisToUse',

		pathLevels	: 1,

		delay		: 500,

		animation	: {opacity:'show'},

		speed		: 'normal',

		autoArrows	: false,

		dropShadows : false,

		disableHI	: true,		// true disables hoverIntent detection

		onInit		: function(){}, // callback functions

		onBeforeShow: function(){},

		onShow		: function(){},

		onHide		: function(){}

	};

	$.fn.extend({

		hideSuperfishUl : function(){

			var o = sf.op,

				not = (o.retainPath===true) ? o.$path : '';

			o.retainPath = false;

			var $ul = $(['li.',o.hoverClass].join(''),this).add(this).not(not).removeClass(o.hoverClass)

					.find('>ul').hide().css('visibility','hidden');

			o.onHide.call($ul);

			return this;

		},

		showSuperfishUl : function(){

			var o = sf.op,

				sh = sf.c.shadowClass+'-off',

				$ul = this.addClass(o.hoverClass)

					.find('>ul:hidden').css('visibility','visible');

			sf.IE7fix.call($ul);

			o.onBeforeShow.call($ul);

			$ul.animate(o.animation,o.speed,function(){ sf.IE7fix.call($ul); o.onShow.call($ul); });

			return this;

		}

	});

	$.fn.supposition = function(){

		var $w = $(window), /*do this once instead of every onBeforeShow call*/

			_offset = function(dir) {

				return window[dir == 'y' ? 'pageYOffset' : 'pageXOffset']

				|| document.documentElement && document.documentElement[dir=='y' ? 'scrollTop' : 'scrollLeft']

			    || document.body[dir=='y' ? 'scrollTop' : 'scrollLeft'];

			},

			onInit = function(){

				/* I haven't touched this bit - needs work as there are still z-index issues */

				$topNav = $('li',this);

				var cZ=parseInt($topNav.css('z-index')) + $topNav.length;

				$topNav.each(function() {

					$(this).css({zIndex:--cZ});

				});

			},

			onHide = function(){

				this.css({marginTop:'',marginLeft:''});

			},

			onBeforeShow = function(){

				this.each(function(){

					var $u = $(this);

					$u.css('display','block');

					var menuWidth = $u.width(),

						parentWidth = $u.parents('ul').width(),

						totalRight = $w.width() + _offset('x'),

						menuRight = $u.offset().left + menuWidth;

					if (menuRight > totalRight) {

						$u.css('margin-left', ($u.parents('ul').length == 1 ? totalRight - menuRight : -(menuWidth + parentWidth)) + 'px');

					}



					var windowHeight = $w.height(),

						offsetTop = $u.offset().top,

						menuHeight = $u.height(),

						baseline = windowHeight + _offset('y');

					var expandUp = (offsetTop + menuHeight > baseline);

					if (expandUp) {

						$u.css('margin-top',baseline - (menuHeight + offsetTop));

					}

					$u.css('display','none');

				});

			};

		

		return this.each(function() {

			var o = sf.o[this.serial]; /* get this menu's options */

			

			/* if callbacks already set, store them */

			var _onInit = o.onInit,

				_onBeforeShow = o.onBeforeShow,

				_onHide = o.onHide;

				

			$.extend(sf.o[this.serial],{

				onInit		: function() {

					onInit.call(this); /* fire our Supposition callback */

					_onInit.call(this); /* fire stored callbacks */

				},

				onBeforeShow: function() {

					onBeforeShow.call(this); /* fire our Supposition callback */

					_onBeforeShow.call(this); /* fire stored callbacks */

				},

				onHide		: function() {

					onHide.call(this); /* fire our Supposition callback */

					_onHide.call(this); /* fire stored callbacks */

				}

			});

		});

	};

})(jQuery);