Webservice for J2EE & .NET application

[jaydev]

Hello,
I want to create a header and footer control which will be used in
both the java and .net application. We are planning to create a
webservice for this in C#. I am familiar in creating a webservice , but
not sure how to create something compatible for java team (J2EE). Java
team needs to output of webservice in XHTML, CSS and javascript format.
Please throw some light on this.

Thanks,
Jay