if(this.opener) means what?

[Revathi Balakrishnan]

Hi All
I am very new to javascript world. But i need to debug a javascript code. i wanted to know what does the below code mean?

if(this.opener)
{

}

Please help me. i am in a very urgent need. Expecting your Advices. Thanks in Advance

[hsriat]

this when directly (not inside a wrapper function or an HTML tag) written in the script means window reference.
And opener means, the other window from which this window has been opened.

So if (this.opener) means, if the parent window exists.

Have a look at this tutorial.

[Revathi Balakrishnan]

Thanks a lot

Really your answer helped me a lot.

[hsriat]

You are welcome