function Plugin(element, options) {
        this.$window            = $(window);
        this.$document          = $(document);
        this.$element           = $(element);
        this.options            = $.extend( {}, defaults, options );
        this.polyfill           = this.options.polyfill;
        this.orientation        = this.$element[0].getAttribute('data-orientation') || this.options.orientation;
        this.onInit             = this.options.onInit;
        this.onSlide            = this.options.onSlide;
        this.onSlideEnd         = this.options.onSlideEnd;
        this.DIMENSION          = constants.orientation[this.orientation].dimension;
        this.DIRECTION          = constants.orientation[this.orientation].direction;
        this.DIRECTION_STYLE    = constants.orientation[this.orientation].directionStyle;
        this.COORDINATE         = constants.orientation[this.orientation].coordinate;

        // Plugin should only be used as a polyfill
        if (this.polyfill) {
            // Input range support?
            if (hasInputRangeSupport) { return false; }
        }

        this.identifier = 'js-' + pluginName + '-' +(pluginIdentifier++);
        this.startEvent = this.options.startEvent.join('.' + this.identifier + ' ') + '.' + this.identifier;
        this.moveEvent  = this.options.moveEvent.join('.' + this.identifier + ' ') + '.' + this.identifier;
        this.endEvent   = this.options.endEvent.join('.' + this.identifier + ' ') + '.' + this.identifier;
        this.toFixed    = (this.step + '').replace('.', '').length - 1;
        this.$fill      = $('<div class="' + this.options.fillClass + '" />');
        this.$handle    = $('<div class="' + this.options.handleClass + '" />');
        this.$range     = $('<div class="' + this.options.rangeClass + ' ' + this.options[this.orientation + 'Class'] + '" id="' + this.identifier + '" />').insertAfter(this.$element).prepend(this.$fill, this.$handle);

        // visually hide the input
        this.$element.css({
            'position': 'absolute',
            'width': '1px',
            'height': '1px',
            'overflow': 'hidden',
            'opacity': '0'
        });

        // Store context
        this.handleDown = $.proxy(this.handleDown, this);
        this.handleMove = $.proxy(this.handleMove, this);
        this.handleEnd  = $.proxy(this.handleEnd, this);

        this.init();

        // Attach Events
        var _this = this;
        this.$window.on('resize.' + this.identifier, debounce(function() {
            // Simulate resizeEnd event.
            delay(function() { _this.update(false, false); }, 300);
        }, 20));

        this.$document.on(this.startEvent, '#' + this.identifier + ':not(.' + this.options.disabledClass + ')', this.handleDown);

        // Listen to programmatic value changes
        this.$element.on('change.' + this.identifier, function(e, data) {
            if (data && data.origin === _this.identifier) {
                return;
            }

            var value = e.target.value,
                pos = _this.getPositionFromValue(value);
            _this.setPosition(pos);
        });
    }
Plugin
@param {String} element
@param {Object} options