function equalHeight(group) {
   tallest = 0;
   group.each(function() {
      thisHeight = $(this).height();
      if(thisHeight > tallest) {
         tallest = thisHeight;
      }
   });
   group.height(tallest);
}

jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend(jQuery.easing,
{
    def: 'easeOutQuad',
    swing: function (x, t, b, c, d) {
        //alert(jQuery.easing.default);
        return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
    },
    easeInQuad: function (x, t, b, c, d) {
        return c * (t /= d) * t + b;
    },
    easeOutQuad: function (x, t, b, c, d) {
        return -c * (t /= d) * (t - 2) + b;
    },
    easeInOutQuad: function (x, t, b, c, d) {
        if ((t /= d / 2) < 1) return c / 2 * t * t + b;
        return -c / 2 * ((--t) * (t - 2) - 1) + b;
    },
    easeInCubic: function (x, t, b, c, d) {
        return c * (t /= d) * t * t + b;
    },
    easeOutCubic: function (x, t, b, c, d) {
        return c * ((t = t / d - 1) * t * t + 1) + b;
    },
    easeInOutCubic: function (x, t, b, c, d) {
        if ((t /= d / 2) < 1) return c / 2 * t * t * t + b;
        return c / 2 * ((t -= 2) * t * t + 2) + b;
    },
    easeInQuart: function (x, t, b, c, d) {
        return c * (t /= d) * t * t * t + b;
    },
    easeOutQuart: function (x, t, b, c, d) {
        return -c * ((t = t / d - 1) * t * t * t - 1) + b;
    },
    easeInOutQuart: function (x, t, b, c, d) {
        if ((t /= d / 2) < 1) return c / 2 * t * t * t * t + b;
        return -c / 2 * ((t -= 2) * t * t * t - 2) + b;
    },
    easeInQuint: function (x, t, b, c, d) {
        return c * (t /= d) * t * t * t * t + b;
    },
    easeOutQuint: function (x, t, b, c, d) {
        return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
    },
    easeInOutQuint: function (x, t, b, c, d) {
        if ((t /= d / 2) < 1) return c / 2 * t * t * t * t * t + b;
        return c / 2 * ((t -= 2) * t * t * t * t + 2) + b;
    },
    easeInSine: function (x, t, b, c, d) {
        return -c * Math.cos(t / d * (Math.PI / 2)) + c + b;
    },
    easeOutSine: function (x, t, b, c, d) {
        return c * Math.sin(t / d * (Math.PI / 2)) + b;
    },
    easeInOutSine: function (x, t, b, c, d) {
        return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b;
    },
    easeInExpo: function (x, t, b, c, d) {
        return (t == 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b;
    },
    easeOutExpo: function (x, t, b, c, d) {
        return (t == d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b;
    },
    easeInOutExpo: function (x, t, b, c, d) {
        if (t == 0) return b;
        if (t == d) return b + c;
        if ((t /= d / 2) < 1) return c / 2 * Math.pow(2, 10 * (t - 1)) + b;
        return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b;
    },
    easeInCirc: function (x, t, b, c, d) {
        return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
    },
    easeOutCirc: function (x, t, b, c, d) {
        return c * Math.sqrt(1 - (t = t / d - 1) * t) + b;
    },
    easeInOutCirc: function (x, t, b, c, d) {
        if ((t /= d / 2) < 1) return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b;
        return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;
    },
    easeInElastic: function (x, t, b, c, d) {
        var s = 1.70158; var p = 0; var a = c;
        if (t == 0) return b; if ((t /= d) == 1) return b + c; if (!p) p = d * .3;
        if (a < Math.abs(c)) { a = c; var s = p / 4; }
        else var s = p / (2 * Math.PI) * Math.asin(c / a);
        return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
    },
    easeOutElastic: function (x, t, b, c, d) {
        var s = 1.70158; var p = 0; var a = c;
        if (t == 0) return b; if ((t /= d) == 1) return b + c; if (!p) p = d * .3;
        if (a < Math.abs(c)) { a = c; var s = p / 4; }
        else var s = p / (2 * Math.PI) * Math.asin(c / a);
        return a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b;
    },
    easeInOutElastic: function (x, t, b, c, d) {
        var s = 1.70158; var p = 0; var a = c;
        if (t == 0) return b; if ((t /= d / 2) == 2) return b + c; if (!p) p = d * (.3 * 1.5);
        if (a < Math.abs(c)) { a = c; var s = p / 4; }
        else var s = p / (2 * Math.PI) * Math.asin(c / a);
        if (t < 1) return -.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
        return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * .5 + c + b;
    },
    easeInBack: function (x, t, b, c, d, s) {
        if (s == undefined) s = 1.70158;
        return c * (t /= d) * t * ((s + 1) * t - s) + b;
    },
    easeOutBack: function (x, t, b, c, d, s) {
        if (s == undefined) s = 1.70158;
        return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
    },
    easeInOutBack: function (x, t, b, c, d, s) {
        if (s == undefined) s = 1.70158;
        if ((t /= d / 2) < 1) return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b;
        return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b;
    },
    easeInBounce: function (x, t, b, c, d) {
        return c - jQuery.easing.easeOutBounce(x, d - t, 0, c, d) + b;
    },
    easeOutBounce: function (x, t, b, c, d) {
        if ((t /= d) < (1 / 2.75)) {
            return c * (7.5625 * t * t) + b;
        } else if (t < (2 / 2.75)) {
            return c * (7.5625 * (t -= (1.5 / 2.75)) * t + .75) + b;
        } else if (t < (2.5 / 2.75)) {
            return c * (7.5625 * (t -= (2.25 / 2.75)) * t + .9375) + b;
        } else {
            return c * (7.5625 * (t -= (2.625 / 2.75)) * t + .984375) + b;
        }
    },
    easeInOutBounce: function (x, t, b, c, d) {
        if (t < d / 2) return jQuery.easing.easeInBounce(x, t * 2, 0, c, d) * .5 + b;
        return jQuery.easing.easeOutBounce(x, t * 2 - d, 0, c, d) * .5 + c * .5 + b;
    }
});

(function ($) {
    $.fn.SlideIS = function (options) {
        return this.each(function (i) {
            var el = this
            el.current = 0;
            el.$this = $(this).css({ position: 'relative' });
            el.list = el.$this.find('.slide-item');
            el.opt = $.extend({}, SlideIS, options);
            el.index = i;
            el.total = el.list.size();
            el.tID = null;
            var w, h;
            switch (el.opt.direction) {
                case 'horizontal':
                    width = el.total * el.opt.width;
                    height = el.opt.height;
                    break;
                case 'vertical':
                    width = el.opt.width;
                    height = el.total * el.opt.height;
                    break;
                default:
                    width = el.total * el.opt.width;
                    height = el.total * el.opt.height;
                    break;
            };
            el.itemContainer = $('<div class="item-container" style="height:' + el.opt.height + 'px;position:relative;overflow:hidden">')
								.css({ height: el.opt.height, width: el.opt.width, position: 'relative', overflow: 'hidden' });
            el.$this.css({ height: height, width: width });

            el.$this.wrap(el.itemContainer);
            el.pagination = $('<div class="pagination">');
            el.$this.parent().parent().append(el.pagination);
            var num = $('<ul class="pages">').appendTo(el.pagination);
            var pos = { x: 0, y: 0 };
            var n;
            el.list.each(function (j) {
                var current = '';
                if (j == 0) current = 'current';
                //var $a = $('<a href="#'+(j)+'" class="spr slide-link '+current+'">'+(j+1)+'</a>').click(function(){
                var $a = $('<a href="#' + (j) + '" class="spr slide-link ' + current + '"> </a>').click(function () {
                    if (el.opt.autoplay) {
                        window.clearInterval(el.tID);
                        autoplay();
                    }
                    var href = this.index;
                    el.pagination.find('.current').removeClass('current');
                    $(this).addClass('current');
                    var params = {};
                    if (el.opt.direction == 'diagonal') {
                        params = { right: (el.opt.width * href), bottom: (el.opt.height * href) }
                    }
                    else if (el.opt.direction == 'vertical') {
                        params = { bottom: (el.opt.height * href) }
                    }
                    else if (el.opt.direction == 'horizontal') {
                        params = { right: (el.opt.width * href) }
                    };
                    el.$this.stop().animate(params, {
                        duration: el.opt.speed,
                        easing: el.opt.ease,
                        complete: function () {
                            // alert('ok');
                        }
                    });
                    el.index = href;
                    return false;
                });

                n = $a.get(0);
                n.index = j;


                $('<li class="slideIS-item">').appendTo(num).append($a);

                if (el.opt.direction == 'diagonal') {
                    pos.x = j * el.opt.width;
                    pos.y = j * el.opt.height;
                }
                else if (el.opt.direction == 'horizontal') {
                    pos.x = j * el.opt.width;
                }
                else if (el.opt.direction == 'vertical') {
                    pos.y = j * el.opt.height;
                };

                var list = $(this).css({ height: el.opt.height, width: el.opt.width, position: 'absolute', left: pos.x, top: pos.y });
                list.show();
                /*var $loader = $('<div class="loading">').appendTo(list);
                var image = new Image();
                image.onload = function(){
                image.onload = null;
                $loader.fadeOut();
                img.css({marginLeft:-image.width*.5,marginTop:-image.height*.5,position:'absolute',left:'50%',top:'50%'}).fadeIn();
                var alt = img.attr('alt');
                if(typeof alt != 'undefined'){
                //$titleHolder.text(alt).fadeIn();
                }
                };
                image.src = img.attr('src');*/

            });
            if (el.opt.autoplay) {
                window.clearInterval(el.tID);
                autoplay();
            }
            function autoplay() {
                el.tID = window.setInterval(function () {
                    var next = parseInt(el.index + 1);
                    if ((el.index + 1) == el.total) {
                        el.pagination.find('[href$=#0]').click();

                    }
                    else {
                        el.pagination.find('[href$=#' + next + ']').click();
                    }
                }, 7000)
            }
        });
    }
    SlideIS = {
        ease: 'easeInOutExpo',
        speed: 1000,
        delay: null,
        autoplay: null,
        height: 321,
        width: 800,
        direction: 'horizontal' // vertical horizontal
    };
})(jQuery);