(function($) {

    $.fn.slide = function(options) {

        var defaults = {

            slideWidth: 520,

            autoplay: true,

            duration: 5000,

            showNavigator: false,

            showSlideIndex: false

        };

        var options = $.extend(defaults, options);

        return this.each(function() {

            var slideshow = $(this);

            var o = options;

            var currentPosition = 0;

            var slides = $('.slide');

            var numberOfSlides = slides.length;

            var t;



            // Remove scrollbar in JS

            $('#slidesContainer').css('overflow', 'hidden');

			$('#bannercaption').css({opacity: 0.7});

			$('#bannercaption p').css({opacity: 1});



            // Wrap all .slides with #slideInner div

            slides.wrapAll('<div id="slideInner"></div>')



            // Float left to display horizontally, readjust .slides width

			.css({

			    'float': 'left',

			    'width': o.slideWidth

			});



            // Insert a clone of first slide 

            $('.slide:first').clone().appendTo('#slideInner');



            // Set #slideInner width equal to total width of all slides

            $('#slideInner').css('width', o.slideWidth * (numberOfSlides + 1));
			


            // Start

            init();



            //Init function

            function init() {



                if (o.autoplay == true) setNextTimeOut(o.duration);

            }



            // Next

            function next() {

                currentPosition++;

                if (currentPosition >= numberOfSlides) currentPosition = 0;

                slideTo(currentPosition, true);

            }



            // Previous

            function prev() {

                currentPosition--;

                if (currentPosition < 0) currentPosition = numberOfSlides - 1;

                slideTo(currentPosition, false);

            }



            // Go to a slide 

            function goto(position) {

                currentPosition = position;

                slideTo(currentPosition, false);

            }



            // Set time out for next slide

            function setNextTimeOut() {

                t = setTimeout(function() { next(); }, o.duration);

            }



            function clearNextTimeOut()

            { 

                clearTimeout(t);

            }

            // Slide

            function slideTo(position, continuously) {

                $('#slideInner').stop();

                clearNextTimeOut();

                // usual cases

                if (continuously == false || o.autoplay == false || position != 0) {

                    $('#slideInner').animate({ 'marginLeft': o.slideWidth * (-position) }, '', '',

						function() {


						    if (o.autoplay == true) setNextTimeOut();

						}

					)
					$('#bannercaption').css({opacity: 0.7});

                }

                // autoplay: slide from last to first one continuously

                else {

                    // slide to the 'fake' first slide (actually at the last)

                    $('#slideInner').animate({ 'marginLeft': o.slideWidth * (-numberOfSlides) }, '', '',

						function() {

						    //immediately change to the 'true' first slide

						    $('#slideInner').css('marginLeft', 0);

						    if (o.autoplay == true) setNextTimeOut();

						}

					)

                }

            }


        });

    };

})(jQuery);