> a span.l { display: none; }
> a:hover span.s { display: none; }
> a:hover span.l { display: inline; }

This will also make sure that users of assistive technology will never
get the extra information, which might be a desired output.

> <div class="vnav">
>         <ul>
>           <li>
>             <a href="index.php">
>               <span class='s'><b>::</b> Home</span>
>               <span class='l'>
>                 <span class="ltxt"><b>::</b> Home</span>
>                 <span class="rtxt">Quality - Integrity - Responsiveness</span>
>               </span>
>             </a>
>           </li>
>         </ul>
> </div>

This on the other hand will read "COLON COLON Home" which might not be
a desired impression to give.

Can we please stop treating HTML as CSS's servant? And while we're at
it, can we stop painting with HTML? B elements have no semantic value
and colons in text have a purpose  and are not a replacement for an
image. Without any CSS or a different CSS than the one applied this
markup results in a link called

":: Home :: HomeQuality - Integrity - Responsiveness"

which is actually rather ironic.

You simply cannot expect all users to see your site and they HAVE to
rely on your HTML and your text! Everybody is bitching about web sites
that need JavaScript to make sense, but web sites that don't make much
sense without CSS are not a bit better.

If you want fancy rollover text that extends the normal link text,
there is a perfectly valid HTML attribute for that: title.

<a href="index.html" title="Businesses Support the Arts">Businesses</a>

If you consider the hover tooltip browsers generate from title
attributes too boring, use some JavaScript to spice it up:
http://developer.yahoo.com/yui/examples/container/tooltip.html
http://developer.yahoo.com/yui/container/tooltip/index.html

I always thought going from tables and fonts to CSS is a step away
from tagsoup towards clean and maintainable sites. The belief that all
CSS solutions for behaviour are superior to JavaScript for these fancy
add-ons seems to lead to more and more examples that throws us back to
1999 in terms of HTML quality.

There are JavaScripts out there that help you achieve all this, keep
the look and feel in CSS classes that get applied and work with
semantically valuable HTML instead of requiring a lot of extra and
nonsensical elements. In a lot of cases the functionality that comes
out of it will also be more accessible, as you can test for keyboard
access in JavaScript and you can check if a popup fits on the screen
without causing scrollbars, something you can't do in CSS.

Sorry if that came across as a rant and maybe off-topic but I do get
the feeling we are running in circles.
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