1. Click the button above, view the popup
2. See "hello World" displayed as the value of the form element
3. Type anything you want into the box
4. Click the button again.
5. In IE, the new value is part of the innerHTML, and is visible.
6. In Mozilla/Firefox/Netscape, the innerHTML is unchanged.
7. Realize that for form values, innerHTML is a 'live' value in IE,
but a 'static' one for Gecko-based browsers.
8. Sigh heavily.