Bing Translator doesn't translate AJAX dynamic content

Hi Guys:

    I have a website already implement Bing translator widget. the widget works well in static web page, the only one problem is: seems it doesn't translate AJAX dynamic content.

for example:

1. web page language is Chinese, click translate button, translate web page to English.

2. click another button to load some Chinese text from server, display on page.  Not Work!

Is it possible Bing translator detective document change and translate?  Are there some params to control?

Thanks

vigo