Dear all,

I have been asked to write a simulator for a project - which is done. However, presenting the data has hit a snag.

my perl program takes a feed from a simulator (all ok), acts on it (all ok) and then should present the data to the summary screen at intervals (currently 10 seconds).
So we have:
read data
form html page with simulator input
wait 10s
show stage 1 of processing data
wait 10s
show stage 2 of processing data
wait 10s
etc.
(5 stages in total of processing, so that an engineer can look at the current state of the process and analyse for any anomalies/etc. etc)
This all seems to work OK EXCEPT that my cgi program, after each wait, writes to the screen a full web page BUT THIS IS TAGGED ON TO THE END OF THE CURRENT ONE ON THE SCREEN INSTEAD OF FORMING A COMPLETELY NEW PAGE.
Q: How can I refresh the HTML screen as well as the data in the page?
I don't really care if it can't be done in perl - I can adapt javascript or html if required.
I have tried the meta tag 'refresh' in the HTML page, which works but it restarts the whole CGI program from scratch - ie does all the initialisations that would be done BEFORE the simulator analysis is done, which is obviously what I do not want.
Any help or suggestions?

In reply to Page refresh, timings and simulations by gsd4me

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