Component for Applet

Hi,

I'am trying to write component similar to
http://mrhaki.blogspot.cz/2009/05/wicket-component-for-java-deployment.html
but I need to use JNLP for applet deployment. I write my own Resource
that generate JNLP file (it's xml, so I use JAXB and marschalling) and
I am also able generate script tag with appropriate content into html
page (onComponentTagBody).

My problem is url for resource. I don't know how to generate it - each
applet on my page (there can be more applets on one page) have to has
different JNLP so some shared resource can't be used.

Thanks for help