The same methodology thas was initially devised is still required. The most
common methodology being the attempt to use JavaScript to implement a
scripting function such as assigning the date to a variable and then trying
to determine if the variabe contains data.
The same is true when trying to determine if the browser remains configured
to support cookies. Try to write a cookie and then try to read it.
Don't be confused by the System.Web.HttpBrowserCapabilities class as all it
can be used for is to determine if a browser can support JavaScript or
Cookies and not if JavaScript or cookies have actually been enabled or
disabled.