Source http://www.hashemian.com/tools/javascript-countdown.htm
Simply cut and paste this code into source mode in publish
<script language="JavaScript"> TargetDate = "12/31/2020 5:00 AM"; BackColor = "palegreen"; ForeColor = "navy"; CountActive = true; CountStepper = -1; LeadingZero = true; DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds."; FinishMessage = "It is finally here!"; </script> <script language="JavaScript" src="http://scripts.hashemian.com/js/countdown.js"></script>
<script language="javascript" src="countdown.js"></script> <script language="javascript"> var cd1 = new countdown('cd1'); cd1.Div = "clock1"; cd1.TargetDate = "03/14/2011 9:00 AM"; cd1.DisplayFormat = "%%D%% days, %%H%% hours, %%M%% minutes, %%S%% seconds"; var cd2 = new countdown('cd2'); cd2.Div = "clock2"; cd2.TargetDate = "02/28/2011 9:00 AM"; cd2.DisplayFormat = "%%D%% days, %%H%% hours, %%M%% minutes, %%S%% seconds"; </script> <div id="clockwrapper"><div id="clock1">[clock1]</div></div> <div id="clockwrapper"><div id="clock2">[clock2]</div></div> <script language="javascript"> <!-- cd1.Setup(); cd2.Setup(); //--> </script>