We have an asp.net application written in vb.net 2008 against framework 3.5
We use master pages. We want to have a countdown on the master page which resets to 20 minutes each postback and starts counting down so the user knows when their session will expire. We have a label in a Table cell which is the label to be updated. I can change this from a server label to an html label if this will make it easier.
I tried a few examples but couldnt get the thing to go. Can anyone show me one which will work in the environment i mentioned above?