Initialize new content loaded by ajax

[Anubarak]

Is it currently possible to initialize new popups dynamically loaded via ajax without creating a new instance?

When I do

<script type="text/javascript">
  var popbox = new Popbox({
        blur:true,
        overlay:true,
      });
</script>

again the plugin is initialized twice -> all event handlers will execute multiple times instead of just once so I need to unbind all of them.
I searched in the code but I wasn't able to spot something useful, do I need to fork it and include the feature on my own?