I cannot seem to get the ImageUrl property to see the GIF file in design mode, not even in the dialog box that looks for the file. It'll find any other graphics file, but not the GIF file. Is there some trick to this?

I removed the ange brackets so that thsi woudl save the code below:

asp:ImageButton ID="submitImageButton" ImageUrl="Submit.gif" runat="server" 

I also placed the GIF file in the same folder as the web form.

The image does not show up in Design mode, only in Run Time.