Browser Detection Mi-Creativity

// Detecting browsers
$UA = navigator.userAgent;

if ($UA.match(/firefox/i)) {
    $browser = 'Firefox';
} else if ($UA.indexOf('Trident') != -1 && $UA.indexOf('MSIE') == -1) {
    $browser = 'MSIE';
} else if ($UA.indexOf('MSIE') != -1) {
    $browser = 'MSIE';
} else if ($UA.indexOf('OPR/') != -1) {
    $browser = 'Opera';
} else if ($UA.indexOf("Chrome") != -1) {
    $browser = 'Chrome';
} else if ($UA.indexOf("Safari")!=-1) {
    $browser = 'Safari';
}
if($UA.match(/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Nokia|Mobile|Opera Mini/i)) {
    $browser = 'Mobile';
}else if($UA.match(/KFAPWI/i)){
    $browser = 'Kindle';
}