Animated Backround Image / web design

Budget: $100 to $500

I am starting up a ecommerce business. I have a website with hosting . I require someone to add a animated backround for me on my website. I would like a cherry blossom tree as the backround of my website , that has its leaves blowing , branches moving , and leaves falling .

http://www.glitter-graphics.com/graphics/36745 kinda like this , but more realistic looking leaves . I want the cherry tree to look real as possible , perhaps even real tree , with animated movements or something along those lines.

It would be mostly a border around my website , with the products in the middle. Mostly the corners , and leaves falling on the sides of the website .

The bottom of the website , where the box is for contact us , shipping info , terms of use etc. I would like to look like its underground in dirty , and above level you see a little grass , and above that you see the leaves from the cherry blossom tree.

i want it to look real , and a very pleasant simple yet elegant backround for my website :D