Internetworkers: http://www.ibiblio.org/internetworkers/

[Scott <catfather AT donpoo.net>]

The w3c.org validator tends to agree that it's not valid xhtml  
transitional which is what the doctype for the page defines the mark  
up as. There are lots of warnings about invalid comment tags and at  
first glance they seem harmless but I seem to recall Gecko browsers,  
including Netscape, having some issues from time to time with  
improperly formed HTML comments.

Cleaning up the obvious comment markup errors would be my first  
suggestion. MSIE tends to be way more forgiving about bad markup  
which is why I find doing initial testing in Firefox much more  
productive and then doing a final clean up in MSIE as needed.

About comment tags, from memory:

<!-- this is valid, notice the spaces -->
<!--------this isn't valid as it's missing the space after the open  
tag and before the closing tag--------->

Hope it helps.

--
Scott <catfather AT donpoo.net>
AIM: BlueCame1