HTML and CSS Reference
border image with sides and middle set to round
border image with sides and middle set to stretch
Border backgrounds are supported in Firefox 3.5+, Opera 10.5+, Chrome
3+, and Safari 3.2+.
Though not explicitly CSS related, the Accessible Rich Internet Application
definitions of common semantics of application widgets and states as
a semantic layer to be added to existing HTML markup using the role
attribute. Role types include navigation , progressbar , alertdialog ,
tab, and tooltip . By applying these roles to HTML elements, screen
readers and other assistive devices can react to these items more appro-
priately than they would an element with a class or id of progressbar .