How can i find what are all the URL's open in the browser and convert to page object in asp.net

Hi Folks,
How can i find what are the URL's opened in the browser window and how can i get that page as a page object as described below.
Eg: 
The opened url ='http:\\localhost\IPTracking\Index.aspx'
We can fetch the page by giving the below code
page=(page)HttpContext.Current.CurrentHandler.
How can we do it for all the opened URL's because if we give the HttpContext.Current.CurrentHandler then it will display the page object within the site but i want the page object from other sites also.
Thanks in Advance!
With Regards,
P.Sathish Kumar.
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