Unwanted character generated

The site is here: https://journal.whitefield.edu

It requires a login until the site is complete: login – phillip, password: ross (I usually have to enter the login twice – don’t know why).

As you can see, I have added a menu. If you will look at the site’s generated code in IE or Opera you will see that an unknown character has been generated just before the menu:

?{HERE}<div id=”menu”>

FF ignores it. But IE and Opera cause it to generate an extra line.

It may be my PHP code in the header.php file

<? include("forummenu.htm") ?> <!--Phil added-->

which calls this file (no headers, nothing but this div:

<div id="menu">

...

</div>

How can I get rid of the generated character?

Phil