How large is the usable area in iPad Safari

Question

I\'m developing a web app for the iPad, to run in Safari. I don\'t yet have an iPad to test on. Does anyone know the usable screen size - after any space for the safari/ipad

Answer 1

I have edited Andy Idsinga answer, creating an HTML document you can upload anywhere and run on your devices. I've corrected viewport metatag and set automatic reload on screen rotation. I've also added w+10, w-10, h+10, h-10 buttons. Please upvote also Andy if you like this, since he was the original author!