/*
 * 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
 *自定义下拉列表
 * 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, '"></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.autoarrows) addarrow($('>a:first-child', this));
            }).not('.' + c.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);

        }).each(function() {
            var 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',//添加到最外层ul上的class
        anchorclass: 'sf-with-ul',//默认显示的a的class
        //arrowclass: 'sf-sub-indicator',
        shadowclass: 'sf-shadow'//添加到最外层ul上的class
    };
    sf.defaults = {
        hoverclass: 'sfhover',
        pathclass: 'overidethistouse',
        pathlevels: 1,
        delay: 800,
        animation: {
            opacity: 'show'
        },
        speed: 'normal',
        autoarrows: true,
        dropshadows: true,
        disablehi: false,
        // 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;
        }
    });

})(jquery);
//可随意定义以下class名
jquery(function() {
    jquery("ul.list-menu").superfish();
});