/*!
	Zoom 1.7.14
	license: MIT
	http://www.jacklmoore.com/zoom
*/
(function($) {
    var defaults = {
        url: false,
        callback: false,
        target: false,
        duration: 120,
        on: "mouseover",
        touch: true,
        onZoomIn: false,
        onZoomOut: false,
        magnify: 1
    };
    $.zoom = function(target, source, img, magnify) {
        var targetHeight, targetWidth, sourceHeight, sourceWidth, xRatio, yRatio, offset, $target = $(target),
            position = $target.css("position"),
            $source = $(source);
        $target.css("position", /(absolute|fixed)/.test(position) ? position : "relative");
        $target.css("overflow", "hidden");
        img.style.width = img.style.height = "";
        $(img).addClass("zoomImg").css({
            position: "absolute",
            top: 0,
            left: 0,
            opacity: 0,
            width: img.width * magnify,
            height: img.height * magnify,
            border: "none",
            maxWidth: "none",
            maxHeight: "none"
        }).appendTo(target);
        return {
            init: function() {
                targetWidth = $target.outerWidth();
                targetHeight = $target.outerHeight();
                if (source === $target[0]) {
                    sourceWidth = targetWidth;
                    sourceHeight = targetHeight
                } else {
                    sourceWidth = $source.outerWidth();
                    sourceHeight = $source.outerHeight()
                }
                xRatio = (img.width - targetWidth) / sourceWidth;
                yRatio = (img.height - targetHeight) / sourceHeight;
                offset = $source.offset()
            },
            move: function(e) {
                var left = e.pageX - offset.left,
                    top = e.pageY - offset.top;
                top = Math.max(Math.min(top, sourceHeight), 0);
                left = Math.max(Math.min(left, sourceWidth), 0);
                img.style.left = left * -xRatio + "px";
                img.style.top = top * -yRatio + "px"
            }
        }
    };
    $.fn.zoom = function(options) {
        return this.each(function() {
            var settings = $.extend({}, defaults, options || {}),
                target = settings.target || this,
                source = this,
                $source = $(source),
                $target = $(target),
                img = document.createElement("img"),
                $img = $(img),
                mousemove = "mousemove.zoom",
                clicked = false,
                touched = false,
                $urlElement;
            if (!settings.url) {
                $urlElement = $source.find("img");
                if ($urlElement[0]) {
                    settings.url = $urlElement.data("src") || $urlElement.attr("src")
                }
                if (!settings.url) {
                    return
                }
            }(function() {
                var position = $target.css("position");
                var overflow = $target.css("overflow");
                $source.one("zoom.destroy", function() {
                    $source.off(".zoom");
                    $target.css("position", position);
                    $target.css("overflow", overflow);
                    $img.remove()
                })
            })();
            img.onload = function() {
                var zoom = $.zoom(target, source, img, settings.magnify);

                function start(e) {
                    zoom.init();
                    zoom.move(e);
                    $img.stop().fadeTo($.support.opacity ? settings.duration : 0, 1, $.isFunction(settings.onZoomIn) ? settings.onZoomIn.call(img) : false)
                }

                function stop() {
                    $img.stop().fadeTo(settings.duration, 0, $.isFunction(settings.onZoomOut) ? settings.onZoomOut.call(img) : false)
                }
                if (settings.on === "grab") {
                    $source.on("mousedown.zoom", function(e) {
                        if (e.which === 1) {
                            $(document).one("mouseup.zoom", function() {
                                stop();
                                $(document).off(mousemove, zoom.move)
                            });
                            start(e);
                            $(document).on(mousemove, zoom.move);
                            e.preventDefault()
                        }
                    })
                } else if (settings.on === "click") {
                    $source.on("click.zoom", function(e) {
                        if (clicked) {
                            return
                        } else {
                            clicked = true;
                            start(e);
                            $(document).on(mousemove, zoom.move);
                            $(document).one("click.zoom", function() {
                                stop();
                                clicked = false;
                                $(document).off(mousemove, zoom.move)
                            });
                            return false
                        }
                    })
                } else if (settings.on === "toggle") {
                    $source.on("click.zoom", function(e) {
                        if (clicked) {
                            stop()
                        } else {
                            start(e)
                        }
                        clicked = !clicked
                    })
                } else if (settings.on === "mouseover") {
                    zoom.init();
                    $source.on("mouseenter.zoom", start).on("mouseleave.zoom", stop).on(mousemove, zoom.move)
                }
                if (settings.touch) {
                    $source.on("touchstart.zoom", function(e) {
                        e.preventDefault();
                        if (touched) {
                            touched = false;
                            stop()
                        } else {
                            touched = true;
                            start(e.originalEvent.touches[0] || e.originalEvent.changedTouches[0])
                        }
                    }).on("touchmove.zoom", function(e) {
                        e.preventDefault();
                        zoom.move(e.originalEvent.touches[0] || e.originalEvent.changedTouches[0])
                    })
                }
                if ($.isFunction(settings.callback)) {
                    settings.callback.call(img)
                }
            };
            img.src = settings.url
        })
    };
    $.fn.zoom.defaults = defaults
})(window.jQuery);