SecurityError: Error #2060: Security sandbox violation: ExternalInterface caller

Hi Guys,

I am getting this error while deploying my widget.

"SecurityError: Error #2060: Security sandbox violation: ExternalInterface caller".

I am using externalInterface to get the host name which will deploy this widget. But, when, I gone through your guide/faq there I got there has been made securities behind it.

Let me know how can i fix it because it is necessary to get the host name which will deploy this widget?

Hope I will get solutions asap.