单击中键激活/关闭滚动。激活后，页面会根据鼠标与初始点的距离和方向持续自动滚动。
As of
This script brings back the classic middle-click auto-scroll feature. Just click the middle mouse button once to activate a smooth scrolling mode. The page will then scroll automatically based on your mouse's direction and its distance from the initial click point—the further you move, the faster it scrolls. To stop, simply click any mouse button: left, right, or middle. You can also adjust the scrolling speed by editing the SENSITIVITY_FACTOR value within the script.
