[xsl] Strip contents but keep children

[Chad Chelius <cchelius@xxxxxxxxxxxxxxx>]

I have an XML file that is structured like this:

<person> by <FirstName>Jane</FirstName>
<LastName>Doe</LastName>,
</person>

The problem I am having is that the DTD that I am trying to validate  
to, will not allow text within the person element. Text can only  
appear within the <FirstName> and <LastName> elements. So what I need  
to do is stip out all of the text that is loose within the <person>  
element but keep the children elments within the <person> element.  
Any ideas?