[pmwiki-users] Tool tips not working for me

[Randy]

Can anyone tell me why I don't see a tool tip when I follow the recipe  
described at http://www.pmwiki.org/wiki/Cookbook/LinkPageExistsFmtTooltip 
  and then hover my cursor over a link?

I'm using the latest version of PmWiki, and have a number of recipes  
installed.

The working example referred to in the recipe works for me, so I doubt  
the problem is with my browser.

My Sandbox contains:

(:title The Sandbox:)
Description: test tool tips

[[Main.Sandbox]]

My config.php contains only one reference to LinkPageExistsFmt:

$LinkPageExistsFmt = "<a class='wikilink' title='{\$Description}'  
href='\$LinkUrl'>\$LinkText</a>";

Thanks in advance for any comments,

Randy