(function ($) {
    $.fn.easySlider = function (options) {
        var defaults = {
            prevId: 'prevBtn',
            nextId: 'nextBtn',
            prevText:false,
            nextText: false,
            autogeneratePagination: false,
            orientation: 'fade',
            speed: 2000,
            autoplayDuration: 0,
            restartDuration: 2500,
            loop: false,
            hoverPause: 0,
            hover: false,
            easing: null,
            pauseable: false,
            pauseButtons: false,
            beforeTransition: null,
            afterTransition: null
        };
        var options = $.extend(defaults, options);
        return this.each(function () {
            var obj = $(this),
                totalSlides = $("li", obj).length,
                slideWidth = obj.width(),
                slideHeight = obj.height(),
                lastSlide = totalSlides - 1,
                current = 0;
            var vertical = (options.orientation == 'vertical'),
                fade = (options.orientation == 'fade'),
                horizontal = (!vertical && !fade),
                autogen = options.autogeneratePagination,
                pauseable = options.pauseable,
                loop = options.loop,
                speed = options.speed,
                easing = options.easing,
                hover = options.hover,
                hoverPause = options.hoverPause,
                buttonsPause = options.pauseButtons,
                restartDuration = options.restartDuration,
                autoplayDuration = Math.max(options.autoplayDuration, 25) + speed,
                autoplay = (options.autoplayDuration > 0),
                beforeTransition = options.beforeTransition,
                afterTransition = options.afterTransition;
            interval = null, restart = null;
            if (autogen) {
                $(obj).after('<span id="' + options.prevId + '"><a href=\"javascript:void(0);\">' + options.prevText + '</a></span> ' + '<span id="' + options.nextId + '"><a href=\"javascript:void(0);\">' + options.nextText + '</a></span>');
            }
            var $ul = $("ul", obj),
                $next = $("#" + options.nextId),
                $prev = $("#" + options.prevId);
            if (loop) {
                $ul.append($("li:first", obj).clone());
                totalSlides += 1;
                lastSlide += 1;
            }
            if (horizontal) {
                $("li", obj).css('float', 'left');
                $ul.css('width', totalSlides * slideWidth);
            }
            if (fade) {
                $ul.find("li:not(:first)").hide();
            }
            var pauseFunc = function () {
                    clearInterval(interval);
                    clearTimeout(restart);
                }
            var restartFunc = function () {
                    restart = setTimeout(function () {
                        interval = setInterval(auto, autoplayDuration);
                    }, restartDuration);
                };
            if (pauseable && autoplay) {
                $(obj).hover(pauseFunc, restartFunc);
                if (buttonsPause) {
                    $next.hover(pauseFunc, restartFunc);
                    $prev.hover(pauseFunc, restartFunc);
                }
            }
            if (!hover) {
                $next.click(function () {
                    if (autoplay) {
                        pauseFunc();
                        if (!buttonsPause) {
                            restartFunc();
                        }
                    };
                    animate("next");
                });
                $prev.click(function () {
                    if (autoplay) {
                        pauseFunc();
                        if (!buttonsPause) {
                            restartFunc();
                        }
                    };
                    animate("prev");
                });
            } else {
                var hoverNext = false,
                    hoverPrev = false,
                    isAnimating = false;
                $next.hover(function () {
                    var tfunc = arguments.callee;
                    hoverNext = true;
                    if (!isAnimating) {
                        isAnimating = true;
                        animate("next", function () {
                            isAnimating = false;
                            if (hoverNext) {
                                tfunc();
                            }
                        });
                    }
                }, function () {
                    hoverNext = false;
                });
                $prev.hover(function () {
                    var tfunc = arguments.callee;
                    hoverPrev = true;
                    if (!isAnimating) {
                        isAnimating = true;
                        animate("prev", function () {
                            isAnimating = false;
                            if (hoverPrev) {
                                tfunc();
                            }
                        });
                    }
                }, function () {
                    hoverPrev = false;
                });
            }

            function animate(dir, cb) {
                if (beforeTransition) {
                    beforeTransition(current, $ul.find('li:eq(' + current + ')'), $ul);
                }
                var newcb = function () {
                        if (cb != null) {
                            (hoverPause == 0) ? cb() : setTimeout(cb, hoverPause);
                        }
                        if (afterTransition) {
                            afterTransition(current, $ul.find('li:eq(' + current + ')'), $ul);
                        }
                    }
                var cur = current;
                if (loop) {
                    if (dir == 'next') {
                        current = (current == lastSlide) ? 1 : current + 1;
                    } else {
                        current = (current == 0) ? lastSlide - 1 : current - 1;
                    }
                } else {
                    if (dir == "next") {
                        current = (current >= lastSlide) ? lastSlide : current + 1;
                    } else {
                        current = (current <= 0) ? 0 : current - 1;
                    }
                }
                var nex = current;
                if (loop) {
                    if ((dir == "next") && (cur == lastSlide)) {
                        (vertical) ? $ul.animate({
                            marginTop: 0
                        }, -1) : $ul.animate({
                            marginLeft: 0
                        }, -1);
                    } else if ((dir == "prev") && (cur == 0)) {
                        (vertical) ? $ul.animate({
                            marginTop: (totalSlides - 1) * slideHeight * -1
                        }, -1) : $ul.animate({
                            marginLeft: (totalSlides - 1) * slideWidth * -1
                        }, -1);
                    }
                }
                if (horizontal) {
                    $ul.animate({
                        marginLeft: (nex * slideWidth * -1)
                    }, speed, easing, newcb);
                } else if (vertical) {
                    $ul.animate({
                        marginTop: (nex * slideHeight * -1)
                    }, speed, easing, newcb);
                } else {
                    var curli = 'li:eq(' + cur + ')';
                    var nexli = 'li:eq(' + nex + ')';
                    $ul.find(curli).fadeOut("slow", function () {
                        $ul.find(nexli).fadeIn("slow", newcb);
                    });
                }
                /*if (!loop) {
                    if (nex <= 0) {
                        $prev.fadeOut();
                    } else if (nex >= lastSlide) {
                        $next.fadeOut();
                    } else {
                        $next.fadeIn();
                        $prev.fadeIn();
                    }
                }*/
            };
            if (autoplay) {
                var auto = function () {
                        animate('next');
                        if (!loop && current >= lastSlide) {
                            clearInterval(interval);
                        }
                    }
                restart = setTimeout(function () {
                    auto();
                    interval = setInterval(auto, autoplayDuration);
                }, autoplayDuration - speed);
            }
            //$next.hide();
            //$prev.hide();
           /* if (totalSlides > 1) {
                $next.fadeIn();
                if (loop) {
                    $prev.fadeIn();
                }
            }*/
        });
    };
})(jQuery);