0 and
later
The Firefox extension
for CardSpace
can be detected by
raising an event
281
looks for the event listener in the Firefox extension. Upon the
loading of the Hypertext Markup Language (HTML) document in
the browser, the JavaScript function to determine the presence of
card support is called, and the developer can use the result to
alter the presentation of the page accordingly. Cascading Style
Sheets (CSS) and JavaScript make this possible with little effort:
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-
??? strict.dtd">