I ran your site through www.htmlhelp.com and it returned a bunch of errors you should probably take a look at (most are missing alt tags on the links, but there are a few other errors you should check into)
The major one says there is a </p> on line 146 without a corresponding <p>.
It also said you mispelled <html> on the first line.
OK, I again went to the validator site, and it returned a bunch of errors again. The ones that jump out at me are <CENTER></CENTER> tags where they're not allowed (lines 57,64,76,85), mismatched tags (at least according to their validator, but I don't know if the center tags are throwing them off)