HTML, JavaScript, and PHP dynamic page with cache problems in browsers

I need help with making IE and FF not cache my web pages. My website is dynamic, but whenever it goes to a certain page, it seems like these browsers use the cache instead of a refreshed webpage with new content. Any help would be greatly appreciated. Thanks!
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MasonWolfConnect With a Mentor Commented:
Try this in your header:

<meta name='cache-control' content='no-cache' />

Alternately, you can use php's "header" tag as:
header('cache-control: no-cache');
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