ASP.NET and JavaScript Redirection

I have a page which executes some JavaScript, redirecting the user to another page:

   // Redirection from oldpage.js
   window.location.href = sTargetPageURL;

But in targetpage.aspx's Page_Load() event, I can't access the Request.UrlReferrer property...it's Nothing...and I need to know who called this page!

   '// targetpage.aspx's Page_Load() event...
   Try
      sCallerPageURL = Me.Request.UrlReferrer.AbsoluteUri
   Catch   '<< EXCEPTION THROWN!  UrlReferrer is Nothing!
      sCallerPageURL = ""
   End Try

How can I redirect using JavaScript, so that I can still access my "calling" page via the UrlReferrer.AbsoluteUri property?

Thanks!
brykerAsked:
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mmarinovCommented:
The problem is that when you redirect your page the Request collection is undefined because you have not requested anything.

You can catch your referrer from javascript and the other way is to use Querystring

window.location.href = sTargetPageURL + "?previousPage=" + document.url;
so in sTargetPageURL in the Page_Load() event you can

Try
   sCallerPageURL = Request.QueryString("previousPage")
Catch
   sCallerPageURL = ""
End Try

B..G
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brykerAuthor Commented:
Sorry I took so long in answering...there's just no excuse for forgetting it for this long.

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