CSS3+jQuery鼠标跟随图片悬停效果，能够判断鼠标移入的方向，遮罩可以按移入的方向出现，也可以从反方向出现，可设定延迟值-CSS3+ jQuery hover effect mouse with pictures, can determine the direction of the mouse moved, the mask can appear shifted in direction, can also occur the opposite direction, you can s