how to get url

Hi
how to get url of a page in javascript when we have frames? when I am using window.parent.location I am getting url but if apply any method let us say "window.parent.location.length" then it is not giving length, why it is so? can any body please help me

theMainURL = parent.document.location.href;

Dear Friends,
I am using following code.
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var url=parent.document.location.href
window.open('refer.php?url='+url,'Refer','status=no,location=no,scrollbars=yes,width=450,height=200')
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But i am not getting full url [http://localhost/ghale/itinerary_detail.php?page=Trekking&sid=20] due to use of "&" in url.
Anybody knows the solution.
Thanks

did you alert what the url string is to see if it was grabbing all of the data?

Is it the full URL? Most likely so!
The real problem is that you are mixed fire and water with two query strings in one url in the pop up window, so it is dumping the data most likely from the second query string.
you most likely will have to escape the first url before adding it to the pop up url.

Eric

Thanks
escape function really works for me.
Once again thanks.