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Permission denied to access property 'document' With Facebook

Hi Guys,

Recently I was using Facebook application 'RSS Graffiti' to feed rss feeds into my profile. 'RSS Graffiti' excellent application and can be configured within few steps. Here I'm not going to explain how it is configured but I'm going to discuss here different issue. This is not related to RSS Graffiti.

I configured RSS Graffiti and feeds are successfully publishing in my profile wall. It publishes brief description and a link to the another site(RSS feeds originally come from this site). Let say Facebook is SiteA and the second site which is opened from the link clicked on the Facebook is SiteB.

In Javascript term we can say SiteA(FB) is a opener and SiteB(opening window) is the child window. So Opener opens a child window. Hereafter Ill use these Javascript terms on behalf of non-technical terms.

I clicked on the link in the opener and it opens child. And now within child I have a button and clicking on this button it should be refreshed the opener and reload another URL into the opener. Code for this.

opener.document.location = MyNewUrl;

But what happened is code executed to the this line and generates a Javascript error like this.
Permission denied to access property 'document'
opener.document.location = MyNewUrl;

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