java call applet method from javascript problem

I have a problem when call applet method from javascript..

I used this function to load applet

$("body").append('<applet id="asra" name="asra" code="akorbulsoundrecorder/recorder.class" archive="http://localhost/.../java/akorbulSoundRecorder.jar" width="300" height="400" MAYSCRIPT></applet>');

and I can call applet function javascript there is no problem;

but

alert(1);
document.asra.stopCapture();
alert(2);

alert(1) and document.asra.stopCapture(); is working but alert(2) doesn't work?

stopCapture function

public void stopCapture() {

    AccessController.doPrivileged(new PrivilegedAction() {
        public Object run() {



            if(!test)
            jso.call("__appletRecord", new String[] {"stop"});

            targetDataLine.stop();
            targetDataLine.close();


            String filename = audioFile.getAbsolutePath();
            try {
                final ArrayList < String > cmd = getCommand(filename);
                if(!test)
                jso.call("__appletRecord", new String[] {"convertMp3"});
                Main.main(cmd.toArray(new String[cmd.size()]));
                if(!test)
                jso.call("__appletRecord", new String[] {"deleteWav"});
                //audioFile.delete();
            } catch (IOException e1) {
                System.err.println(e1.getMessage());
            }


            try {
                // Establish a connection
                if(!test)
                jso.call("__appletRecord", new String[] {"upload"});
                httpUrlConnection = (HttpURLConnection) new URL("http://localhost/.../java/upload.php").openConnection();
                httpUrlConnection.setDoOutput(true);
                httpUrlConnection.setRequestMethod("POST");
                outputStream = httpUrlConnection.getOutputStream();
                // Buffered input stream
                fileInputStream = new BufferedInputStream(new FileInputStream("c:\\junk.mp3"));
                // Get the size of the image
                totalBytes = fileInputStream.available();
                // Loop through the files data
                for (int i = 0; i < totalBytes; i++) {
                    // Write the data to the output stream
                    outputStream.write(fileInputStream.read());
                    bytesTrasferred = i + 1;
                }
                // Close the output stream
                outputStream.close();
                if(!test)
                jso.call("__appletRecord", new String[] {"success"});
                // New reader to get server response
                serverReader = new BufferedReader(new InputStreamReader(httpUrlConnection.getInputStream()));
                // Read the servers response
                serverResponse = "";
                while ((response = serverReader.readLine()) != null) {
                    serverResponse = serverResponse + response;
                }
                if(!test)
                jso.call("__appletPHPResponse", new String[] {response});
                // Close the buffered reader
                serverReader.close();
                // Close the file input stream
                fileInputStream.close();
            } catch (IOException ex) {
                jLabel1.setText(ex.getMessage());
            }

            return null; // nothing to return
        }
    });

}