IE+Cortona+JDK(1.3.1,1.6.0_05)+VRML97.jar 无法使用Java脚本，为什么？

在自己的机子中做了如下的设置，但在加载VRML文件后，仍然无法运行Java脚本，使用的是JSAI接口。哪位高手知道解决办法，请不吝赐教，在此谢谢了！

一机子设置

1.      安装了Cortona VRML客户端插件，IE能够解析VRML文件。

2.      安装了JDK(1.3.1版本)和JDK(1.6.0_05版本)，设置了VRML97.jar包，可以编写和编译JSAI脚本。

3.      设置的JDK环境变量如下：

(1) JAVA_HOME = C:/Program Files/Java/jdk1.3.1_16

(2) CLASSPATH =

.;%JAVA_HOME%/lib;%JAVA_HOME%/lib/tools.jar;%JAVA_HOME%/lib/vrml97.jar

    (3) PATH = %JAVA_HOME%/bin;%JAVA_HOME%/jre/bin;

4.      IE->选项->高级中的设置如下图：

            

 

二代码

VRML文件如下:

#VRML V2.0 utf8

Shape

{

       geometry DEF text Text

       {

              string "Hello!"

       }

}

DEF Controller Script

{

       field SFNode text USE text

       url "JSAITextChanged.class"

}

脚本JSAITextChanged.class源码如下：

import java.awt.*;

import java.awt.event.*;

import vrml.*;

import vrml.field.*;

import vrml.node.*;

 

 

publicclass JSAITextChanged extends Script {

 

       private MFString textNode = null;

       publicvoid initialize()

       {

              Node node = (Node)((SFNode)getField("text")).getValue();

              textNode = (MFString)(node.getExposedField("string"));

              PopupWindow p = new PopupWindow();

              //p.pack();

              p.setVisible(true);

       }

      

       privatevoid setText(String s)

       {

              String[] str = new String[1];

              str[0] = s;

              textNode.setValue(str);

             

       }

       class PopupWindow extends Frame

       {

              private Label red = new Label("Please input text");

              private TextField text = new TextField("Hello!");

              private Button submit = new Button("OK");

              public PopupWindow()

              {

                     FlowLayout f = new FlowLayout();

                     setLayout(f);

                     f.setHgap(5);

                     add(red);

                     add(text);

                     add(submit);

                     add(submit);

                     submit.addActionListener(new ActionListener()

                     {

                            publicvoid actionPerformed(ActionEvent e)

                            {

                                   setText(text.getText());

                            }

                     });

              }

       }

}