To force the update of individual elements on a page, you can use the following meta tags:
Use the EXPIRES header (in the HEAD section of the page) with a date in the past to make the browser think the content's always old and force a refresh:
<META HTTP-EQUIV="Expires" CONTENT="Mon, 04 Dex 1999 21:22:23 GMT">
To direct the browser not to cache the page at all, insert this after the closing BODY tag of the html page:
<HEAD>
<META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">
</HEAD>
According to Microsoft, this technique doesn't work with MSIE 4, 5
When loading one page from another, you can force the linked page to reload:
<a href="some_url.htm?1">The ?1 fakes a query and forces a reload</a>
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