A practice quiz. This counts as a participation grade only, but I will collect it. I want to see where everybody is. Here's the problem: Write an web page with XHTML + JavaScript that will produce a knock-knock joke. The page should contain a form where you can fill in: +-------------------------+ who's there | | +-------------------------+ punchline +-------------------------+ | | +-------------------------+ The page will produce: Knock Knock! Whos There (fill in who's there) (fill in who's there) who? (fill in punchline) You can produce the output using window.alert, document.write, filling in a form, or with dynamic html (getElementById()). Go.