The following code works and prints the correct bibtex key type:
<span class="bibtextypekey"></span>
However, the following operation does not work for INPROCEEDINGS types. The BIBTEXTYPEKEY is returned as undefined:
<div class="bibtexVar" extra="+BIBTEXTYPEKEY+"></div>
What I am trying to do is to use an specific css class for different bibentry types.