detect if a request parameter exists

[Per Jørgen Walstrøm]

hello,
there used to be a taglib called request, which is now deprecated 
(http://jakarta.apache.org/taglibs/doc/request-doc/intro.html). Request had a 
tag called existsAttribute which was very handy. It could be used like this:

<request:existsAttribute name="geMenuItem" value="true">
    <!-- do something -->
</request:existsAttribute>

Does anybody have a suggestion of what taglib to use instead of request?

cheers,
pj