感谢楼上，都已经说过了，早就安装过了 online，offline都试过了，没有效果，才敢来问

如果上面的测试地址也没效果,说明没有装好
about:plugins中应该有
Java(TM) 2 Platform Standard Edition 5.0 Update 5

    文件名： NPJava11.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME 类型 描述 后缀 已启用
application/x-java-applet;version=1.1.1 Java Applet 是
application/x-java-bean;version=1.1.1 JavaBeans 是
application/x-java-applet;version=1.1 Java Applet 是
application/x-java-bean;version=1.1 JavaBeans 是
application/x-java-applet Java Applet 是
application/x-java-bean JavaBeans 是

Java(TM) 2 Platform Standard Edition 5.0 Update 5

    File name: NPJava11.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME Type Description Suffixes Enabled
application/x-java-applet;version=1.1.1 Java Applet Yes
application/x-java-bean;version=1.1.1 JavaBeans Yes
application/x-java-applet;version=1.1 Java Applet Yes
application/x-java-bean;version=1.1 JavaBeans Yes
application/x-java-applet Java Applet Yes
application/x-java-bean JavaBeans Yes
Java(TM) 2 Platform Standard Edition 5.0 Update 5

    File name: NPJava12.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME Type Description Suffixes Enabled
application/x-java-applet;version=1.2 Java Applet Yes
application/x-java-bean;version=1.2 JavaBeans Yes
application/x-java-applet;version=1.1.3 Java Applet Yes
application/x-java-bean;version=1.1.3 JavaBeans Yes
application/x-java-applet;version=1.1.2 Java Applet Yes
application/x-java-bean;version=1.1.2 JavaBeans Yes
Java(TM) 2 Platform Standard Edition 5.0 Update 5

    File name: NPJava13.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME Type Description Suffixes Enabled
application/x-java-applet;version=1.3.1 Java Applet Yes
application/x-java-bean;version=1.3.1 JavaBeans Yes
application/x-java-applet;version=1.4 Java Applet Yes
application/x-java-bean;version=1.4 JavaBeans Yes
application/x-java-applet;version=1.4.1 Java Applet Yes
application/x-java-bean;version=1.4.1 JavaBeans Yes
Java(TM) 2 Platform Standard Edition 5.0 Update 5

    File name: NPJava14.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME Type Description Suffixes Enabled
application/x-java-applet;version=1.4.2 Java Applet Yes
application/x-java-bean;version=1.4.2 JavaBeans Yes
application/x-java-applet;version=1.5 Java Applet Yes
application/x-java-bean;version=1.5 JavaBeans Yes
Java(TM) 2 Platform Standard Edition 5.0 Update 5

    File name: NPJava32.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME Type Description Suffixes Enabled
application/x-java-applet;version=1.3 Java Applet Yes
application/x-java-bean;version=1.3 JavaBeans Yes
application/x-java-applet;version=1.2.2 Java Applet Yes
application/x-java-bean;version=1.2.2 JavaBeans Yes
application/x-java-applet;version=1.2.1 Java Applet Yes
application/x-java-bean;version=1.2.1 JavaBeans Yes
Java(TM) 2 Platform Standard Edition 5.0 Update 5

    File name: NPJPI150_05.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME Type Description Suffixes Enabled
application/x-java-applet;jpi-version=1.5.0_05 Java Applet Yes
application/x-java-bean;jpi-version=1.5.0_05 JavaBeans Yes
Java(TM) 2 Platform Standard Edition 5.0 Update 5

    File name: NPOJI610.dll
    Java Plug-in 1.5.0_05 for Netscape Navigator (DLL Helper)

MIME Type Description Suffixes Enabled
application/x-java-vm Java Yes
MicrosoftR DRM
---------------------------------------
这样还是没装上？
我想问，有没有人在FF上打开了java applet?

http://www.w3.org/People/mimasa/test/object/java/clock

可以看到很多时钟

同样可以看到各地时钟。
不知道w3c的标准是什么
我们的内部网在ie中打开时出现loading java applet ...只有正确运行
而在FF中出现的是缺少插件后安装jre，问题依旧
何故？？

另外下拉菜单也无法在FF中打开
比如 http://bbs.runsky.com/bbs/main.php
左侧ctrltree就无法被扩展
需要什么插件？还是.net写的网页都无法打开？

emperor：另外下拉菜单也无法在FF中打开
比如 http://bbs.runsky.com/bbs/main.php
左侧ctrltree就无法被扩展
需要什么插件？还是.net写的网页都无法打开？回到原帖

我打开非常正常阿，反应相当快，哈哈

CooB：

我打开非常正常阿，反应相当快，哈哈回到原帖

晕~~~~~~~~
我这里少了什么插件？？