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2-byte aligned check the JSVAL macros at the top of [http://lxr.mozilla.org/seamonkey/source/js/src/jsapi.h#71 jsapi.h ]
* [http://groups.google.com/group/mozilla.dev.tech.js-engine/browse_frm/thread/9a2c9872a3e5c94e Can I call functions in Mozilla extensions from web page?]
No, accessing anything in the web page's script may lead to security problems.