iPad 2 Ad

Hey, been given the task of creating an ipad ad, which as to expand on click or hover.

I’m aware it will have to be done in JavaScript/HTML5 but not to sure where to start. The basic scope of the project is they will click on an image at the bottom of the page and for it to expand into a full screen image.

Any guidance or example tutorial would be fantastic.

Thanks in advance

It sounds like you are referring to a web site (app).
What is the significance of iPad in the equation?

Or, is this an existing iPad app (iOS) that needs to provide “in app” advertising?

Can you clarify a bit?