case KeyEvent.DOM_VK_RIGHT:
            step = event.shiftKey ? step * STEP_MULTIPLIER : step;
            xOffset = Number($.trim(this.$selectionBase[0].style.left.replace("%", "")));
            adjustedOffset = (event.keyCode === KeyEvent.DOM_VK_LEFT) ? (xOffset - step) : (xOffset + step);
            xOffset = Math.min(100, Math.max(0, adjustedOffset));