Nokia WRT App Development Problem

I want to develop an RSS reader application for my Nokia E71 which is
series 60 3rd edition device. I did use Nokia web run time with the prototype
js framework for AJAX requests and observed one strange behavior of web run time.
ajax response is empty on each call, even when i tested this in Firefox and Chrome
response was empty but then its working for internet explorer and i am getting the
xml response. When i installed the app in my Nokia phone ajax request doesn't work at all.
Am i missing something ?, if there are any special js api available to achieve this please suggest me

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