function browsers(){
global $HTTP_USER_AGENT ;
if (isset($HTTP_USER_AGENT)){
$sAgent = $HTTP_USER_AGENT;
}else{
$sAgent = $_SERVER['HTTP_USER_AGENT'];
}
if (strpos($sAgent,'MSIE') !== false && strpos($sAgent,'mac') === false && strpos($sAgent,'Opera') === false){
$iVersion = (float)substr($sAgent,strpos($sAgent,'MSIE') + 5,3);
return ($iVersion >= 5.5) ;
}else if (strpos($sAgent,'Gecko/') !== false){
$iVersion = (int)substr($sAgent,strpos($sAgent,'Gecko/') + 6,8);
return ($iVersion >= 20030210) ;
}else{
return false;
}
}