(function ($) {
    $.fn.tinycarousel = function (options) {
        var defaults = {
            start: 1,
            display: 1,
            axis: 'x',
            controls: true,
            pager: false,
            interval: false,
            intervaltime: 3000,
            rewind: false,
            animation: true,
            duration: 1000,
            callback: null
        };
        var options = $.extend(defaults, options);
        var oSlider = $(this);
        var oViewport = $('.viewport:first', oSlider);
        var oContent = $('.overview:first', oSlider);
        var oPages = oContent.children();
        var oBtnNext = $('.next:first', oSlider);
        var oBtnPrev = $('.prev:first', oSlider);
        var oPager = $('.pager:first', oSlider);
        var iPageSize, iSteps, iCurrent, oTimer, bPause, bForward = true,
            bAxis = options.axis == 'x';
        return this.each(function () {
            initialize();
        });

        function initialize() {
            iPageSize = bAxis ? $(oPages[0]).outerWidth(true) : $(oPages[0]).outerHeight(true);
            //var iLeftover = Math.ceil(((bAxis ? oViewport.outerWidth() : oViewport.outerHeight()) / (iPageSize * options.display)) - 1); //below changed to accommodate margins
            var iLeftover = Math.ceil(((bAxis ? oViewport.outerWidth() : oViewport.outerHeight()) / (iPageSize * options.display)) - 2);
            //alert("iLeftover= "+iLeftover);
            iSteps = Math.max(1, Math.ceil(oPages.length / options.display) - iLeftover);
            //alert("iSteps= "+iSteps);
            iCurrent = Math.min(iSteps, Math.max(1, options.start)) - 2;
            oContent.css(bAxis ? 'width' : 'height', (iPageSize * oPages.length));
            move(1);
            setEvents();
        }

        function setEvents() {
            if (options.controls && oBtnPrev.length > 0 && oBtnNext.length > 0) {
                oBtnPrev.click(function () {
                    move(-1);
                    return false;
                });
                oBtnNext.click(function () {
                    move(1);
                    return false;
                });
            }
            if (options.interval) {
                oSlider.hover(function () {
                    clearTimeout(oTimer);
                    bPause = true
                }, function () {
                    bPause = false;
                    setTimer();
                });
            }
            if (options.pager && oPager.length > 0) {
                $('a', oPager).click(setPager);
            }
        }

        function setButtons() {
            if (options.controls) {
                oBtnPrev.toggleClass('disable', !(iCurrent > 0));
                oBtnNext.toggleClass('disable', !(iCurrent + 1 < iSteps));
            }
            if (options.pager) {
                var oNumbers = $('.pagenum', oPager);
                oNumbers.removeClass('active');
                $(oNumbers[iCurrent]).addClass('active');
            }
        }

        function setPager(oEvent) {
            if ($(this).hasClass('pagenum')) {
                iCurrent = parseInt(this.rel) - 1;
                move(1);
            }
            return false;
        }

        function setTimer() {
            if (options.interval && !bPause) {
                clearTimeout(oTimer);
                oTimer = setTimeout(function () {
                    iCurrent = !options.rewind && (iCurrent + 1 == iSteps) ? -1 : iCurrent;
                    bForward = iCurrent + 1 == iSteps ? false : iCurrent == 0 ? true : bForward;
                    move((options.rewind ? (bForward ? 1 : -1) : 1));
                }, options.intervaltime);
            }
        }

        function move(iDirection) {
            if (iCurrent + iDirection > -1 && iCurrent + iDirection < iSteps) {
                iCurrent += iDirection;
                var oPosition = {};
                oPosition[bAxis ? 'left' : 'top'] = -(iCurrent * (iPageSize * options.display));
                oContent.animate(oPosition, {
                    queue: false,
                    duration: options.animation ? options.duration : 0,
                    complete: function () {
                        if (typeof options.callback == 'function') options.callback.call(this, oPages[iCurrent], iCurrent);
                    }
                });
                setButtons();
                setTimer();
            }
        }
    };
})(jQuery);