NCBI and Older Web Browsers
Effective January 1, 2013, NCBI will no longer support Internet Explorer (IE) Version 7. In addition, NCBI pages may claim that your browser is not supported if you are running in compatibility mode for Versions 8 and 9.
NCBI will no longer support Firefox Version 3.
A list of tips and tricks for resolving NCBI Webpage Errors can be found on the NCBI webpage.