HEIGHT and WIDTH indicate the dimensions of the inline frame.
this code
produces this
<IFRAME SRC="hello.html" WIDTH=250 HEIGHT=100>
If you can see this, your browser doesn't
understand IFRAME. However, we'll still
<A HREF="hello.html">link</A>
you to the file.
</IFRAME>
We have not found any official reference that HEIGHT and
WIDTH are required attributes. MSIE's default values are
HEIGHT and WIDTH.