show document name without extension in content query web part

I think my title already reveals my question...

I created a new template in itemstyle.xsl with a field

...
<xsl:value-of select="@TxtField"/>
...

Now in SharePoint, when I edit my content query web part I have a field named "TxtField"

I can show the name of the document with title or name, but then I get this:

without the extension?