if(stristr($_SERVER['HTTP_USER_AGENT'], 'MSIE 6.0')) $xBrowser = 'ie6';
elseif(stristr($_SERVER['HTTP_USER_AGENT'], 'MSIE 7.0')) $xBrowser = 'ie7';
elseif(stristr($_SERVER['HTTP_USER_AGENT'], 'MSIE 8.0')) $xBrowser = 'ie8';
else $xBrowser = 'kawabanga!'; // < ----
if($xBrowser == 'ie6' OR $xBrowser == 'ie7' OR $xBrowser == 'ie8')
header("Location: /browser.php");