class and graphic in FO?

Just began to work on a project by using XSL-FO.  As
in html page, we can use CSS to define a class to
format a html page.  I am wondering how I can define a
class to do a similar trick b/c it is very cumbersome
for me to set the text formatting for every
<fo:block>.

Also, How can I display a picture in a PDF file? 
What's the syntax?

Thanks for any help and have a nice holiday.

Yan

__________________________________________________
Do You Yahoo!?
Check out Yahoo! Shopping and Yahoo! Auctions for all of
your unique holiday gifts! Buy at http://shopping.yahoo.com
or bid at http://auctions.yahoo.com

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list