The height attribute doesn't exist in any portable HTML specification. You're relying on an IE extension. A workable solution is CSS:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
border:1px solid black;
<td>This is a test</td>
I used to work this out by a tip I found on the web, similar to this:
I used to apply a class (fullHeight) to the html tag, but this is not valid code for XHTML.
So, while all other browsers parsed my page correctly, ie did not parse it properly when I had the class attribute there.
Then I did what you posted to bypass the invalid code, but again ie parse it wrong.
Is there any case that applying properties to the html object is invalid in any way?