The library I'm using is:
http://www.mozilla.org/js/spidermonkey/

Takes a little to get up to speed, but I can provide examples if anyone needs them.

// Setup Global Object
    global = JS_NewObject(js_context, &global_class, NULL, NULL);

    JS_InitStandardClasses(js_context, global);
    js_init_global(js_context, global);

    // Add Error Reporter?
    JS_SetErrorReporter(js_context, &js_error_reporter);

    // Read context
    ok = JS_EvaluateScript(js_context, global,
        argument, strlen(argument), "static", 0, &rval);

    // check for error
    if (ok == JS_FALSE)
    {
        bug("There was an error");
    }

    // Cleanup
    JS_ClearScope(js_context, global);
    JS_GC(js_context);

You could always write an article on a basic way to attach JS to Smaug, and then it could be expanded by others as they learn more ;)

Yes, I think an article on embedding javascript as an alternative scripting language would be a good thing.

But why stop there? Lua, Python, and others also scream out to have similar articles if anyone knows how to do that :)

Hmm, I'll look into the OasisOLC for Smaug idea, that could be quite ideal. From a code standpoint I do generally prefer Smaug/ROM over CircleMUD and Smaug with OasisOLC and DG Scripts would work quite well.

I really want to embed php, im just not sure its possible ;)

anything is possible if you believe Kiasyn!

I ported part of OasisOLC to smaug way back in '99 i think, i posted it to the smaug mailing list, and got bitched at cause the post was to big :P It had one bug which i eventually fixed. I think the part i converted was redit, oedit, and medit, was missing some of the smaug options tho. It's in the smaug mailing list archives somewhere, probably take some digging to find it.