Make sure you open an external link and PDFs in a new tab/window. It's good website usability.
Microsoft will end support for all versions of Internet Explorer prior to version 11.
Beginning January 12, 2016, only the most current version of Internet Explorer available for a supported operating system will receive technical supports and security updates.
What Does This Mean?
As a web designer/developer, it means we do not have to create separate web pages or websites for older versions of Internet Explorer.