Fetch URL from iFrame?

[LMS16]

Hi,
I'm abit stuck...
I want to be able to fetch a url from an iframe, I'm assuming you will need to use javascript?

Example:
Iframe points to "http://facebook.com?jkjfh" I want to be able to fetch that url from the iframe if possible...

+REP for any help.

Lew.

[Delatory]

<script type="text/javascript">
function grabURL(){
	var iframe = document.getElementById('frame');
	alert(iframe.src);
}
</script>

<input type="button" onclick="grabURL()" value="Grab URL"><br />
<iframe src="http://google.com" id="frame"></iframe>