CSS/Breadcrumb confusion......

I have done some checking:

http://www.scootervilleusa.com/Scooters/review.cfm?PID=2&Mode=Read

Should display a image/text and a breadcrumb underneath.....similar to:

http://www.scootervilleusa.com/Scooters/review.cfm?PID=25&Mode=Read

I'm confused as to why it works fine on the problem one:
http://www.scootervilleusa.com/Scooters/review.cfm?PID=2&Mode=Read when
I comment out the <div> that contains a custom 'breadcrumb'. Its the
same code as the one that works correctly......so where is the problem?
It also works fine on Firefox (with the <div> not commented out)

The problem just appears to be affecting this 1 product (as far as I can
tell), and in just 1 browser........

Any help from expert eyes is appreciated!

Thanks,
Steve