jitk_jquery_ui_tabs.js

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                // for a disabled or loading tab!
                if (($li.hasClass(o.selectedClass) && !o.unselect)
                    || $li.hasClass(o.disabledClass) 
                    || $(this).hasClass(o.loadingClass)
                    || $(self.element).triggerHandler('tabsselect', [self.ui(this, $show[0])], o.select) === false
                    ) {
                    this.blur();
                    return false;
                }

                self.options.selected = self.$tabs.index(this);

                // if tab may be closed
                if (o.unselect) {
                    if ($li.hasClass(o.selectedClass)) {
                        self.options.selected = null;
                        $li.removeClass(o.selectedClass);
                        self.$panels.stop();
                        hideTab(this, $hide);
                        this.blur();
                        return false;
                    } else if (!$hide.length) {
                        self.$panels.stop();
                        var a = this;
                        self.load(self.$tabs.index(this), function() {
                            $li.addClass(o.selectedClass).addClass(o.unselectClass);
                            showTab(a, $show);
                        });
                        this.blur();
                        return false;
                    }
                }

                if (o.cookie)
                    $.cookie('ui-tabs' + $.data(self.element), self.options.selected, o.cookie);

                // stop possibly running animations
                self.$panels.stop();

                // show new tab
                if ($show.length) {

                    // prevent scrollbar scrolling to 0 and than back in IE7, happens only if bookmarking/history is enabled
                    /*if ($.browser.msie && o.bookmarkable) {
                        var showId = this.hash.replace('#', '');
                        $show.attr('id', '');
                        setTimeout(function() {
                            $show.attr('id', showId); // restore id
                        }, 0);
                    }*/

                    var a = this;
                    self.load(self.$tabs.index(this), $hide.length ? 
                        function() {
                            switchTab(a, $li, $hide, $show);
                        } :
                        function() {
                            $li.addClass(o.selectedClass);
                            showTab(a, $show);
                        }
                    );

                    // Set scrollbar to saved position - need to use timeout with 0 to prevent browser scroll to target of hash
                    /*var scrollX = window.pageXOffset || document.documentElement && document.documentElement.scrollLeft || document.body.scrollLeft || 0;
                    var scrollY = window.pageYOffset || document.documentElement && document.documentElement.scrollTop || document.body.scrollTop || 0;
                    setTimeout(function() {
                        scrollTo(scrollX, scrollY);
                    }, 0);*/

                } else
                    throw 'jQuery UI Tabs: Mismatching fragment identifier.';

                // Prevent IE from keeping other link focussed when using the back button
                // and remove dotted border from clicked link. This is controlled in modern
                // browsers via CSS, also blur removes focus from address bar in Firefox
                // which can become a usability and annoying problem with tabsRotate.
                if ($.browser.msie)
                    this.blur();

                //return o.bookmarkable && !!trueClick; // convert trueClick == undefined to Boolean required in IE
                return false;

            });

            // disable click if event is configured to something else
            if (!(/^click/).test(o.event))
                this.$tabs.bind('click.tabs', function() { return false; });

        },
        add: function(url, label, index) {
            if (index == undefined) 
                index = this.$tabs.length; // append by default

            var o = this.options;
            var $li = $(o.tabTemplate.replace(/#\{href\}/, url).replace(/#\{label\}/, label));
            $li.data('destroy.tabs', true);

            var id = url.indexOf('#') == 0 ? url.replace('#', '') : this.tabId( $('a:first-child', $li)[0] );

            // try to find an existing element before creating a new one
            var $panel = $('#' + id);
            if (!$panel.length) {
                $panel = $(o.panelTemplate).attr('id', id)
                    .addClass(o.panelClass).addClass(o.hideClass);
                $panel.data('destroy.tabs', true);
            }
            if (index >= this.$lis.length) {
                $li.appendTo(this.element);
                $panel.appendTo(this.element.parentNode);
            } else {
                $li.insertBefore(this.$lis[index]);
                $panel.insertBefore(this.$panels[index]);
            }
            
            o.disabled = $.map(o.disabled,
                function(n, i) { return n >= index ? ++n : n });
                
            this.tabify();

            if (this.$tabs.length == 1) {
                 $li.addClass(o.selectedClass);
                 $panel.removeClass(o.hideClass);
                 var href = $.data(this.$tabs[0], 'load.tabs');
                 if (href)
                     this.load(index, href);
            }

            // callback
            $(this.element).triggerHandler('tabsadd',
                [this.ui(this.$tabs[index], this.$panels[index])], o.add
            );
        },
        remove: function(index) {
            var o = this.options, $li = this.$lis.eq(index).remove(),
                $panel = this.$panels.eq(index).remove();

            // If selected tab was removed focus tab to the right or
            // in case the last tab was removed the tab to the left.
            if ($li.hasClass(o.selectedClass) && this.$tabs.length > 1)
                this.select(index + (index + 1 < this.$tabs.length ? 1 : -1));

            o.disabled = $.map($.grep(o.disabled, function(n, i) { return n != index; }),
                function(n, i) { return n >= index ? --n : n });

            this.tabify();

            // callback
            $(this.element).triggerHandler('tabsremove',
                [this.ui($li.find('a')[0], $panel[0])], o.remove
            );
        },
        enable: function(index) {
            var o = this.options;
            if ($.inArray(index, o.disabled) == -1)
                return;
                
            var $li = this.$lis.eq(index).removeClass(o.disabledClass);
            if ($.browser.safari) { // fix disappearing tab (that used opacity indicating disabling) after enabling in Safari 2...
                $li.css('display', 'inline-block');
                setTimeout(function() {
                    $li.css('display', 'block');
                }, 0);
            }

            o.disabled = $.grep(o.disabled, function(n, i) { return n != index; });

            // callback
            $(this.element).triggerHandler('tabsenable',
                [this.ui(this.$tabs[index], this.$panels[index])], o.enable
            );

        },
        disable: function(index) {
            var self = this, o = this.options;
            if (index != o.selected) { // cannot disable already selected tab
                this.$lis.eq(index).addClass(o.disabledClass);

                o.disabled.push(index);
                o.disabled.sort();

                // callback
                $(this.element).triggerHandler('tabsdisable',
                    [this.ui(this.$tabs[index], this.$panels[index])], o.disable
                );
            }
        },
        select: function(index) {
            if (typeof index == 'string')
                index = this.$tabs.index( this.$tabs.filter('[href$=' + index + ']')[0] );
            this.$tabs.eq(index).trigger(this.options.event);
        },
        load: function(index, callback) { // callback is for internal usage only
            
            var self = this, o = this.options, $a = this.$tabs.eq(index), a = $a[0],
                    bypassCache = callback == undefined || callback === false, url = $a.data('load.tabs');

            callback = callback || function() {};
            
            // no remote or from cache - just finish with callback
            if (!url || ($.data(a, 'cache.tabs') && !bypassCache)) {
                callback();
                return;
            }

            // load remote from here on
            if (o.spinner) {
                var $span = $('span', a);
                $span.data('label.tabs', $span.html()).html('<em>' + o.spinner + '</em>');
            }
            var finish = function() {
                self.$tabs.filter('.' + o.loadingClass).each(function() {
                    $(this).removeClass(o.loadingClass);
                    if (o.spinner) {
                        var $span = $('span', this);
                        $span.html($span.data('label.tabs')).removeData('label.tabs');
                    }
                });
                self.xhr = null;
            };
            var ajaxOptions = $.extend({}, o.ajaxOptions, {
                url: url,
                success: function(r, s) {
                    $(a.hash).html(r);
                    finish();
                    
                    // This callback is required because the switch has to take
                    // place after loading has completed.
                    callback();

                    if (o.cache)
                        $.data(a, 'cache.tabs', true); // if loaded once do not load them again

                    // callback
                    $(self.element).triggerHandler('tabsload',
                        [self.ui(self.$tabs[index], self.$panels[index])], o.load
                    );

                    o.ajaxOptions.success && o.ajaxOptions.success(r, s);
                }
            });
            if (this.xhr) {
                // terminate pending requests from other tabs and restore tab label
                this.xhr.abort();
                finish();
            }
            $a.addClass(o.loadingClass);
            setTimeout(function() { // timeout is again required in IE, "wait" for id being restored
                self.xhr = $.ajax(ajaxOptions);
            }, 0);

        },
        url: function(index, url) {
            this.$tabs.eq(index).removeData('cache.tabs').data('load.tabs', url);
        },
        destroy: function() {
            var o = this.options;
            $(this.element).unbind('.tabs')
                .removeClass(o.navClass).removeData('tabs');
            this.$tabs.each(function() {
                var href = $.data(this, 'href.tabs');
                if (href)
                    this.href = href;
                var $this = $(this).unbind('.tabs');
                $.each(['href', 'load', 'cache'], function(i, prefix) {
                      $this.removeData(prefix + '.tabs');
                });
            });
            this.$lis.add(this.$panels).each(function() {
                if ($.data(this, 'destroy.tabs'))
                    $(this).remove();
                else
                    $(this).removeClass([o.selectedClass, o.unselectClass,
                        o.disabledClass, o.panelClass, o.hideClass].join(' '));
            });
        }
    });

})(jQuery);