[webkit-dev] Threading issues regarding Netscape API plugins in WebKit

Hi, Are plugins implemented by using Netscape APIs in WebKit thread safe? Does Netscape APIs in WebKit have similar APIs like NPN_PluginThreadAsyncCall (refer to <http://developer.mozilla.org/en/docs/NPN_PluginThreadAsyncCall> http://developer.mozilla.org/en/docs/NPN_PluginThreadAsyncCall) in Gecko SDK in Mozilla? Will a new thread pawned from plugin main thread be able to invoke any JavaScript methods in browser? Thanks in advance! /Song