Java Firefox4中的小程序问题

我在扩展中的html页面中添加了一个小程序。以下代码行引发异常：

    try {
        document.Applet.isActive();
    }
    catch(e) {
        setTimeout(doingSomeThing(),200);
        return;
    }

错误：尝试在没有InvokedFault方法的对象上调用默认方法

过了一会儿：

TypeError:document.Applet.isActive不是函数

我正在不同的操作系统和firefox版本上测试扩展，以便部署。上述错误发生在运行Java 1.6.0_22的Mac OS X机器上的Firefox 4.0上

它在Mac OS X上用Java版本1.6.0_24对其进行了测试，效果良好

有什么想法吗

更新：我正在1.6.0\u 22上附加Java控制台输出

security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.,com.sun.javaws
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.,com.sun.javaws
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.,com.sun.javaws,com.sun.deploy
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.,com.sun.javaws,com.sun.deploy
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.definition value null
security: property package.definition new value com.sun.javaws
security: property package.definition value com.sun.javaws
security: property package.definition new value com.sun.javaws,com.sun.deploy
security: property package.definition value com.sun.javaws,com.sun.deploy
security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,apple.,com.apple.mrj.,com.apple.jdirect.,com.apple.audio.jdirect.,quicktime.internal.,com.sun.medialib.mlib.,com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.mozilla.jss
security: property package.definition value com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.mozilla.jss
basic: Told clients applet is started
Java Plug-in 1.6.0_22
Using JRE version 1.6.0_22-b04-307-10M3261 Java HotSpot(TM) 64-Bit Server VM User home directory = /Users/tomrTrace level set to 5: all… completed.
basic: Starting applet teardown
basic: Finished applet teardown
basic: Told clients applet is started

谢谢，

看一看，在HTML中随机插入一行JS更为复杂

如果查看该文档并不能为您解决问题，我建议您准备并发布一个，并将URL发送到一个我们可以看到小程序工作/失败的地方。

查看一下，它比在某个随机点向HTML中插入一行JS更复杂

如果查看该文档并不能为您解决问题，我建议您准备并发布一个，并将URL发送到我们可以看到小程序工作/失败的地方