In page no:479.. therez a bracket missing for Eval.
 and also it says select PostbackUrl from the image button data bindings. Though I selected "show all properties" there was no postback Url listed. So I was not able to click on the thumb image to take me to the next page of detailed image. so i added the postbackurl=Eval() in the asp:image in the source mode but it didnt seems to work.. could any one tell me where i have gone wrong??

regards,
ganesh