1. Hovering over the picture will display the picture. This is a function when making a web page, the prompt function. You can get a web page making tool (Dreamwea) to play with, only for people who don't understand.

2. Sign the photo. This is very simple. You can use Photoshop cs4 PS. Image synthesis and processing in one sentence

It's good for you to come and play next time. It is easy to put your name on it!

It's related to your question: it's simple. You can make an animation with flash, and you can understand it by playing with flash. The combination of flash and photoshop will bring you cool pictures.