$slideshow = {

	context: false,

	tabs: false,

	timeout: 7000,      // time before next slide appears (in ms)

	slideSpeed: 1000,   // time it takes to slide in each slide (in ms)

	tabSpeed: 1000,      // time it takes to slide in each slide (in ms) when clicking through tabs

	fx: 'fade',   // the slide effect to use

    

    init: function() {

        // set the context to help speed up selectors/improve performance

        this.context = $('#slideshow');

        

        // set tabs to current hard coded navigation items

        this.tabs = $('ul.slides-nav li', this.context);

        

        // remove hard coded navigation items from DOM 

        // because they aren't hooked up to jQuery cycle

        this.tabs.remove();

        

        // prepare slideshow and jQuery cycle tabs

        this.prepareSlideshow();

    },

    

    prepareSlideshow: function() {

        // initialise the jquery cycle plugin -

        // for information on the options set below go to: 

        // http://malsup.com/jquery/cycle/options.html

        $('div.slides > ul', $slideshow.context).cycle({

            fx: $slideshow.fx,

            timeout: $slideshow.timeout,

            speed: $slideshow.slideSpeed,

            fastOnEvent: $slideshow.tabSpeed,

            pager: $('ul.slides-nav', $slideshow.context),

            pagerAnchorBuilder: $slideshow.prepareTabs,

            before: $slideshow.activateTab,

            pauseOnPagerHover: true,

            pause: true

        });            

    },

    

    prepareTabs: function(i, slide) {

        // return markup from hardcoded tabs for use as jQuery cycle tabs

        // (attaches necessary jQuery cycle events to tabs)

        return $slideshow.tabs.eq(i);

    },



    activateTab: function(currentSlide, nextSlide) {

        // get the active tab

        var activeTab = $('a[href="#' + nextSlide.id + '"]', $slideshow.context);

        

        // if there is an active tab

        if(activeTab.length) {

            // remove active styling from all other tabs

            $slideshow.tabs.removeClass('on');

            

            // add active styling to active button

            activeTab.parent().addClass('on');

        }            

    }            

};





$(function() {

    // add a 'js' class to the body

    $('body').addClass('js');

    

    // initialise the slideshow when the DOM is ready

    $slideshow.init();

});