Create a Facebook Fan Gate

I need to create a simple Facebook Fan Gate. I know how to create a business page and fan gate page with Wildfire but I need special code written to make the page change when the Like button is clicked. I can also supply a jpg or psd file with graphics. I also need to ask questions and learn what is possible with a facebook page and fan gate. Example: Can the page have pictures that change like flash and js will do on a regular website. Can the graphic be partially transparent? Can CSS be used? What does it take to have an email opt-in field? To automatically send an email when the Like button is clicked. Etc. There will be more projects for the right person. Job description includes the following: - create an html landing page for non-fans that visit the page This will be a page that tells them they will get info if they click the “like” button. When they click the 'like' button, the page changes to reveal the info - create another html landing page for fans that have already clicked the “like” button This will be a page of different information. This page will have links to other pages and websites. Please show me samples of facebook fan gates and landing pages you have created for others.