<script>
var os = (function() {
var ua = navigator.userAgent.toLowerCase();
return {
isWin2K: /windows nt 5.0/.test(ua),
isXP: /windows nt 5.1/.test(ua),
isVista: /windows nt 6.0/.test(ua),
isWin7: /windows nt 6.1/.test(ua),
isWin8: /windows nt 6.2/.test(ua),
isWin81: /windows nt 6.1/.test(ua)
};
}());
$(function() {
if (os.isWin2K) {
alert('isWin2K');
}
if (os.isXP) {
alert('isXP');
}
if (os.isVista) {
alert('isVista');
}
if (os.isWin7) {
alert('isWin7');
}
if (os.isWin8) {
alert('isWin8');
}
if (os.isWin81) {
alert('isWin81');
}
})();
</script>
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