How can you get a dynamic image from a webbrowser?

I need to be able to get an image from webbrowser1 and display it in picturebox1. The problem is that the image is dyanamic, and will change every time it loads. Does anybody know how to directly copy the image over? I have been googling for about an hour now.

This is how you would get the image from the url in a picturebox:

Code:

---

Option Strict On
Option Explicit On

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Google's logo
        WebBrowser1.Navigate("http://www.google.com/intl/en/images/logo.gif")
    End Sub

    Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
        'The url of the image I'm assuming would be the url of webbrowser1.
        Dim url_of_image As String = WebBrowser1.Url.ToString

        'Set the picturebox's image to a bitmap of the image found in the website.
        PictureBox1.Image = New System.Drawing.Bitmap(New IO.MemoryStream(New System.Net.WebClient().DownloadData(url_of_image)))
    End Sub

End Class

---

The only thing that I could see a problem is getting the URL of the image.

Is the picture always in the same place on the page? If so it may be possible to use the surrounding HTML to locate the url. It would have been more than a little helpful to have supplied the source HTML anyway, if not the url of the page. Remember that we can't see what you have in front of you!

hmmm... a dynamic image from the web that changes everytime the page reloads... hmmm... what else do I know of that has that same kind of behavior? Ooooh... yeah.... Captcha images....

-tg