Displaying loading gif image whenever my page takes time to load 

but not for particular single control. i had seen this

 http://www.aspsnippets.com/Articles/Display-loading-image-while-PostBack-calls-in-ASPNet.aspx but it working for button , can i check it for my whole page  and all controls whenever it takes times to load.

sorry for poor english.

Thanks in advance

cywa