Interoperability between browsers and operating systems isn't
always a cinch -- as one small but occasionally nettlesome example that
affects our own system, the Safari browser lacks the "hooks" necessary
to operate most online WYSIWYG editors -- but sheesh. FEMA is
running a line of code on its page that essentially asks, "are you
using IE?" and only delivering the page if the answer is yes. The
page works fine if you configure another browser to claim that it's Explorer.