Detect redirect

[systinte5]

I am aware of REFERER header which gives the url of the page that contained the anchor tag <a href=..... But what about the scenario where one site returned error 302 (redirect) with my site url address. This results in the browser redirect to my site. How can I tell which url resulted in this redirect?

Thanks for your help.....

[drawmack]

referrer should still do it.