refresh with I.E. 6

hi,
i’m having an issue with I.E. 6.0, when i use the following at the top of my script

[code=php]
// Date in the past
header(“Expires: Mon, 26 Jul 1997 05:00:00 GMT”);

// always modified
header(“Last-Modified: ” . gmdate(“D, d M Y H:i:s”) . ” GMT”);

// HTTP/1.1
header(“Cache-Control: no-store, no-cache, must-revalidate”);
header(“Cache-Control: post-check=0, pre-check=0”, false);

// HTTP/1.0
header(“Pragma: no-cache”);
?>
[code=php]

the script still does not refresh from the server, its still picks up a cached version from the page i am loading from somethere. This is a frames script, so its a load issue in the main frame in on the browser, it works perfect in I.E. 5.0

is there a know issue here? if so, doe anybody have work around???

many thanks

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