Set the refersh time of page

[COLOR=black][FONT=Arial]Hello,[/FONT][/COLOR]
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[COLOR=black][FONT=Arial]I am a novice user and have very little experience with Action Script. I got some random text from XML with the help of some tutorial on kirupa.com site but want to set the appearance of this text according to the user’s system time. What should I do for this type of work?[/FONT][/COLOR]
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[COLOR=black][FONT=Arial]Thanks.[/FONT][/COLOR]