phonegap jquerymobile android

[sondang pangaribuan]

Hi.. all I'm new in mobile development I have problem when using phonegap + jquerymobile + android 

Application error : The connection to the server was unsuccessful. URL=file:///android_asset/www/ index.html

the problem come when I insert this :

<script type="text/javascript" src="javascript/jquery.mobile1.0a4.1.min.js"></script> 

Im try to add this :

        super.setIntegerProperty("loadUrlTimeoutValue", 60000);  in  src/com/phonegap/xxx.java with no luck

how to fix this

thank

Sondang