JavaScript - Flash Player Plugin Detection

gistfile1.js

var o;
var v;
var x = /([0-9]+).([0-9]+).[\w]?([0-9]+)/;
try {
	o = navigator.plugins["Shockwave Flash"];
	v = o.description.match( x );
}
catch( error ) {
	try {
		o = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
		v = o.GetVariable("$version").match( x );
	}
	catch( error ) {}
}
if( v ) {
	// Number(v[1]) = major version
	// Number(v[2]) = minor version
	// Number(v[3]) = build version
}
else {
	// cannot be detected
}