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<DIV><SPAN class=436192119-14062007><FONT face=Arial size=2>HTML 5 defines new
ways to do things that we have been doing in HTML 4 for years. For example,
<INPUT TYPE='email'> is a new, presumably better, alternative to <INPUT
TYPE='text'> to get an email address from the user. I would like to use it
whenever possible, but fall back to <INPUT TYPE='text'> when the browser
doesn't support it.</FONT></SPAN></DIV>
<DIV><SPAN class=436192119-14062007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=436192119-14062007><FONT face=Arial size=2>In particular, I
would like to author my documents in HTML 5, use an XSLT transform to convert
them to HTML 4, and then serve the HTML 5 document to browsers that understand
it, and the HTML 4 document to browsers that don't. But, how do I know whether
or not the browser understands HTML 5?</FONT></SPAN></DIV>
<DIV><SPAN class=436192119-14062007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=436192119-14062007><FONT face=Arial
size=2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=436192119-14062007><FONT face=Arial
size=2>Brian</FONT></SPAN></DIV></BODY></HTML>