Today, someone mentioned in the QQ group (that is, it seems to be a picture on that surface, and another picture will appear in the browser, and there will be another picture), very interested, I have found it online. Find information, the original browser is covered with a portable mask, so it can easily stack the two pictures with Photoshop, and then dig the pictures with interlaced mask To half, you can achieve the effect, and design a small program when you are interested in the day, it is also very convenient (^ - ^)