I have a process that takes some time. As it is, the user has to wonder for a while if the button click actually "took." I want to display a message to the user, such as "Processing..." as soon as the button click is recognized, and clear it as soon as the processing is done. Server controls, such as a Label, have not served for that purpose.

Can a server control be utilized this way? I suspect not. In that case, I suppose I need something client side. So far my Web application has not used or implemented client-side scripting, so I need help with that if that is the way I have to go.