Looks lie you've got some competing css problems. No way of knowing without having a look at your page via a link!
see http://groups.google.com/group/Google-Maps-API/web/why-including-a-link-is-critical -- You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-api?hl=en.
