/*
 * Superfish v1.4.1 - 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($) {
    $.superfish = {};
    $.superfish.o = [];
    $.superfish.op = {};
    $.superfish.defaults = {
        hoverClass: 'sfHover',
        pathClass: 'overideThisToUse',
        delay: 300,
        animation: { opacity: 'show' },
        speed: 'fast',
        oldJquery: false, /* set to true if using jQuery version below 1.2 */
        disableHI: false, /* set to true to disable hoverIntent usage */
        // callback functions:
        onInit: function() {},
        onBeforeShow: function() {},
        onShow: function() {
            imgId = $(this).prev().children().attr("id");
            imgWidth = $(this).prev().children().attr("width");
            $("#" + imgId).attr("src", "../Images/Navigation/" + imgId + "_dd.gif");

            switch (imgId) {
                case "whatis":
                    $("#ulwhatis li").css("background-color", "#158DA9");
                    break;
                case "doyourpart":
                    $("#uldoyourpart").css("background-color", "#B12071");
                    $("#uldoyourpart li ul").css("background-color", "#B12071");
                    $("#uldoyourpart li ul").css("border-left", "2px solid #D079AA");
                    break;
                case "usefultools":
                    $("#ulusefultools").css("background-color", "#0E487E");
                    break;
                case "localairquality":
                    $("#ullocalairquality").css("background-color", "#FBAF43");
                    break;
            }
        }, /* note this name changed ('onshow' to 'onShow') from version 1.4 onward */
        onHide: function() {
            imgId = $(this).prev().children().attr("id");
            $("#" + imgId).attr("src", "../Images/Navigation/" + imgId + ".gif");
        }
    };
    $.fn.superfish = function(op) {
        var bcClass = 'sfbreadcrumb',
			over = function() {
			    var $$ = $(this), menu = getMenu($$);
			    getOpts(menu, true);
			    clearTimeout(menu.sfTimer);
			    $$.showSuperfishUl().siblings().hideSuperfishUl();
			},
			out = function() {
			    var $$ = $(this), menu = getMenu($$);
			    var o = getOpts(menu, true);
			    clearTimeout(menu.sfTimer);
			    if (!$$.is('.' + bcClass)) {
			        menu.sfTimer = setTimeout(function() {
			            $$.hideSuperfishUl();
			            if (o.$path.length) { over.call(o.$path); }
			        }, o.delay);
			    }
			},
			getMenu = function($el) { return $el.parents('ul.superfish:first')[0]; },
			getOpts = function(el, menuFound) { el = menuFound ? el : getMenu(el); return $.superfish.op = $.superfish.o[el.serial]; },
			hasUl = function() { return $.superfish.op.oldJquery ? 'li[ul]' : 'li:has(ul)'; };

        return this.each(function() {
            var s = this.serial = $.superfish.o.length;
            var o = $.extend({}, $.superfish.defaults, op);
            o.$path = $('li.' + o.pathClass, this).each(function() {
                $(this).addClass(o.hoverClass + ' ' + bcClass)
					.filter(hasUl()).removeClass(o.pathClass);
            });
            $.superfish.o[s] = $.superfish.op = o;

            $(hasUl(), this)[($.fn.hoverIntent && !o.disableHI) ? 'hoverIntent' : 'hover'](over, out)
			.not('.' + bcClass)
				.hideSuperfishUl();

            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);

        }).addClass('superfish');
    };

    $.fn.extend({
        hideSuperfishUl: function() {
            var o = $.superfish.op,
				$ul = $('li.' + o.hoverClass, this).add(this).removeClass(o.hoverClass)
					.find('>ul').hide().css('visibility', 'hidden');
            o.onHide.call($ul);
            return this;
        },
        showSuperfishUl: function() {
            var o = $.superfish.op,
				$ul = this.addClass(o.hoverClass)
					.find('>ul:hidden').css('visibility', 'visible');
            o.onBeforeShow.call($ul);
            $ul.animate(o.animation, o.speed, function() { o.onShow.call(this); });
            return this;
        }
    });

    $(window).unload(function() {
        $('ul.superfish').each(function() {
            $('li', this).unbind('mouseover', 'mouseout'); //,'mouseenter','mouseleave');
        });
    });

})(jQuery);