Interesting Buttonset Issue

Interesting Buttonset Issue

In Firefox 3.6.6, I'm having an issue with creating a buttonset from a series of radio buttons. The HTML for the buttonset is: 

  1. <div id="lcaovizdiv" style="padding-bottom:4px;display:inline-block;">
  2. <input type="radio" checked="checked" id="opaque" name="lcaoviz" onclick="jmolScript('lcaocartoon opaque')"/>
  3. <label for="opaque">Opaque</label>
  4. <input type="radio" id="translucent" onclick="jmolScript('lcaocartoon translucent')" name="lcaoviz"/>
  5. <label for="translucent">Translucent</label>
  6. </div>
I establish this as a buttonset with jQuery("#lcaovizdiv").buttonset() in jQuery(document).ready(). A little later in the page I load a Java applet, and when I load the page in Firefox, Firebug tells me that the Java class corresponding to this applet has no "HTMLFor" method. Safari loads the page and buttonset just fine.

Any ideas what the problem might be?