Facebook connect callback method "onlogin" issue
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i have following tag in my webapp for facebook connect.
It was working perfectly previously.
but some how from few days. callback method "onlogin" is not getting called. so connect is not working. But if i call it explicitly using firebug console. it works.

do anybody has knowledge on it.

<fb:login-button scope="email" onlogin="$.Peng.Facebook.GetFacebookHandler(LoginFacebookUser.login)" size="small" v="2" class=" fb_iframe_widget "><span style="height: 18px; width: 71px; "><iframe id="f23542049" name="f2b7124308" scrolling="no" style="border: none; overflow: hidden; height: 18px; width: 71px; " class="fb_ltr " src="http://www.facebook.com/plugins/login_button.php?api_key=172003791048&amp;channel=http%3A%2F%2Fstatic.ak.facebook.com%2Fconnect%2Fxd_arbiter.php%3Fversion%3D9%23cb%3Df1f46e110c%26origin%3Dhttp%253A%252F%252Fqa.perspectives.com%252Ff37fd5cb6c%26domain%3Dqa.perspectives.com%26relation%3Dparent.parent&amp;locale=en_US&amp;login_text=Connect&amp;scope=email&amp;sdk=joey&amp;size=small"></iframe></span></fb:login-button>

