nJSJCallbacks callbacks = {
nmap_jsj_thread_to_js_context,
nmap_js_context_to_jsj_thread,
nmap_java_object_to_js_object,
nget_JSPrincipals_from_java_caller,
nenter_js_from_java, exit_js,
nerror_print, get_java_wrapper,
ncreate_java_vm,
ndestroy_java_vm,
nattach_current_thread,
ndetach_current_thread,
nget_java_vm,
nreserved10}