Control html page using flash menu

Hi, hi all :slight_smile:
i have flash menu at the top of the main page, what i want is when the user click any button it opens the HTML page for that sec, lets say CONTACT US. but i do not want the menu reload or play again, I mean, want it to still visible and the HTML change only.

i hope the idea is clear.

i use FLASH MX & FrontPage

thanks for your help