The Glass Button extension gives WYSIWYG Web Builder users an easy way to add trendy glass buttons to their website.
The Glass button extension is the first extension which uses some of the new features of the Web Builder extensions API (introduced in WWB 5.04). The Glass Button for example uses the 'Internal links' and 'popup' features which where previously not available for extensions.
http://www.wysiwygwebbuilder.com/glassbutton.html
(free for registered users)