Selenium test with ajax calll

Hi,
i am using fitnesse fraimwork and selenium RC for web UI testing.

In some pages of my application some text/images are loding through the ajax call. So in my wiki pages i am testing these messages which are loding through the ajax.

here selenium doesn't give a call to ajax.so my selenium test is fail.
I am using the following wiki page code:

|setCondition|selenium.browserbot.getCurrentWindow().document.getElementById('bodyMain_thumbnails')|Timeout|20|
|Page contains Label|Uploaded|

actually 'bodyMain_thumbnails' div is loading through ajax at run time with "Uploaded" message.

and my fixture code is like:
public void setWaitTimeout(String milliSec)
{
String locator="//div[@id='bodyMain_title']";
instance.waitForPageToLoad(milliSec+"000");
}

So,please could anybody look into this, and give your valuabe response to me.
while testing if i look into selenium RC browser insted of ajax call being executed it's loading the "login page". in our application if a page fails to load or timeout it is redirect to login page.here it is evdient that either the ajax call is not executed.

it's very urgent.

Regards

Chandra

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