OT: Mozilla won't load page that Konqueror will load

[Kent West <westk@acu.edu>]

I'm web-development illiterate, so was wondering if some of you more 
HTML-savvy folks might help.

My higher-ups want me to test-run a web-based personality assessment 
that we're thinking about using for new hires. The site is

> http://www.profilesontheweb.com 

When I use Mozilla M18 and click on the Logon button, I get a message 
that my connection is refused. When I use Konqueror, I get in okay.

Is this a Mozilla issue (perhaps a toggle somewhere in the preferences - 
I've turned on Java and Javascript and Cookies, no help), or is it 
non-compliant HTML or something similar?

I've got another site with the same problem, so I'm wondering if 
something's broken in Mozilla (it is "pre-release", after all...). But 
if it's non-compliant code, I'd like to know how it's non-compliant so 
that I can email the webmaster(s) and let them know they have broken code.

Thanks!

Kent