i$.modules.loadDeferred() is the "client-side Javascript module that can be used to load resources associated with deferred modules on demand." It is documented best in v8:
http://public.dhe.ibm.com/software/dw/lotus/portal_javadoc/80/portal/wp_client_ext/symbols/i%24.modules.html
but works in 7.0.0.2 as well.
http://public.dhe.ibm.com/software/dw/lotus/portal_javadoc/80/portal/wp_client_ext/symbols/i%24.modules.html
but works in 7.0.0.2 as well.