getting previous page url

[navinkumarnischal]

From page1 i am redirecting to page2 in this pageload event i am redirecting to page3.

In page3 if i give page.urlreffer the i will get page1 url
but i want page2 url here how to get it

and I dont want to save the page2 url in session or query strings and so on...

thanks in advance....