could someone develop an indicator that distinguishes the different markets as they open and close. maybe a rectangle that marks the high and the low of the particular market session and the width of the session open and close time. the indicator should have the option to choose one or more particular sessions to be visible, and should be visible and enhanced during market crossovers. for example, if i selected new york and london, then the indicator would enhance only the market times of those particular market sessions and show the hi and low prices for each session. the indicator should mark full width of the session beforehand and its hi low should be the hi low of the previous market session.
a good example of which to begin is found here:
http://www.forexmarkethours.com/
thank you in advance