Problems with Collapsible Fieldsets in Firefox

I have inserted my node's gmaps into collapsible fieldsets defined using CCK and Contemplate. Everything works great, except that the maps are not centered on the point I'm pointing them to, they are centered several miles east of there. This is only in firefox, not in IE, as they seem to work fine in IE.

Also, the south and east edges of the map stay grey to varying degrees, depending on how you drag it.

These are strange problem, hopefully someone else will be able to reproduce them.

Thanks in advance.

here's the link: http://www.wrestlespace.com/whitley/node/12

-Jesse