Comment Text Box Not Shrinking Within Nested Comments in IE

This has been driving me nuts.

When I try to reply directly to a nested comment – nested deep below – the text box doesn’t shrink enough to keep from expanding the smaller size of the nested comment area.

This expands the smaller nested comment area into the sidebar, forcing all the widgets in the sidebar to drop to the bottom of the screen.

Firefox automatically resizes it appropriately so doesn’t give me this problem. The text area in IE shrinks some, but not enough. Does anyone know of a workaround for this?

Here’s from my comment.php:

<p><textarea name=”comment” id=”comment” cols=”80″ rows=”10″ tabindex=”4″></textarea>
<input name=”submit” type=”submit” id=”submit” tabindex=”5″ value=”SUBMIT COMMENT” /></p>

Here’s from my style.css:

#comment {
width:100%;
}