alignment problem

Hi, I have my main page which is www.fkcapitalfund.com. If you click to any other link on the site like www.fkcapitalfund.com/bridgefinancing.html, the words in the navigation bar shifts slightly upward and the join the email list thing shifts to the right slightly. I compare the HTML on both and they're identical. I can't figure it out.

I had wanted to create a PHP header and footer so that I would only have to create 1 header and 1 footer and then reference each one on all my pages, but it's exceedingly difficult. Any help on the above problem would be appreciated, thanks.

Hello fkcap,
I'm afraid I did not dig through it all to see but that homepage has 110 errors (http://validator.w3.org/check?verbose=1&uri=http%3A%2F%2Fwww.fkcapitalfund.com%2F) and the next page, Bridge Financing, has 421 errors (http://validator.w3.org/check?verbose=1&uri=http%3A%2F%2Fwww.fkcapitalfund.com%2Fbridgefinancing.html).
One of those missing closing tags maybe?