Thank you for the responsive reply. Would you show me your live example or code snippet? How I hope JBoss can support WML/WMLScript fully fledged.

Yes, I did configure it in $JBOSS_HOME/server/default/deploy/jbossweb.sar/web.xml, and actually the JBoss' default settings are as follows:

<mime-mapping>
        <!-- Wireless Bitmap -->
        <extension>wbmp</extension>
        <mime-type>image/vnd.wap.wbmp</mime-type>
    </mime-mapping>
    <mime-mapping>
        <!-- WML Source -->
        <extension>wml</extension>
        <mime-type>text/vnd.wap.wml</mime-type>
    </mime-mapping>
    <mime-mapping>
        <!-- Compiled WML -->
        <extension>wmlc</extension>
        <mime-type>application/vnd.wap.wmlc</mime-type>
    </mime-mapping>
    <mime-mapping>
        <!-- WML Script Source -->
        <extension>wmls</extension>
        <mime-type>text/vnd.wap.wmlscript</mime-type>
    </mime-mapping>
    <mime-mapping>
        <!-- Compiled WML Script -->
        <extension>wmlscriptc</extension>
        <mime-type>application/vnd.wap.wmlscriptc</mime-type>
    </mime-mapping>

Anybody help clarify this trivial but critical question?

I also tried on Nokia XpressMusic, and the phone prompted to me a dialog whether to save the wmls file or not.

Does that mean it's the browser, not the app/proxy server, that doesnt support WMLScript? If so, please tell me which brand/model/type supports WMLScript?

Or, WMLScript is just a specification, not implemented and hence supported by any devices at all?    

I know maybe it's a problem with the browser-side support of WAP/WMLScript, so I just also wrote an email to OMA for detailed information.

Post it here just to be helped by someone who happened to have some developing/configuring experince with such subject.

Kindest regards, Nessus.