Coder to Design Meme-Builder/Generator For My Wesbite

I want to create a meme builder for my website. I would like my users to be able to choose from any one of a few hundred (maybe even thousand) pre-created images, or upload their own. They could then caption the photos with funny text, and then download them, or share the images with friends. Additionally, all the images would stay preserved on my site (for several months, at least), where other users could see them, and vote on them. Here are my basic specs: 1) Users would have a max image size, say 3 MB, that they could upload. 2) Each uploaded image would be compressed significantly to save storage space 3) Each image created would be watermarked with my site's domain name. 4) Each image could be emailed, facebooked, or tweeted directly from my site. Basically, what I'm looking for is a program that would clone the functionality of: [http://builder.cheezburger.<wbr />com/builder/][1] (note, I am NOT looking to emulate the design of this site. Not only is that illegal, but I want the finished meme generator to blend into my site's own design. Again, I am strictly looking to copy the functionality of the above mentioned link, not the design).