Indiator for MT4 to indicate opening and closing times and overlaps of markets like London in relation to New York, etc.

 
Is there an Indicator that is in existence or that can be created for MetaTrader4 that can show the times of the different markets opening and closing in relation to the activity of the charts? find knowing when markets are opening and closing helpful in analyzing my trading entry and exits. Having a bar at the bottom of the chart showing this will allow me to measure activity in relation to that. If you
 

You could always search .... It's even easier than typing out a post.

http://lmgtfy.com/?q=Trading+session+indicator+%20codebase

V