Find Blackberry OS Version

Here is the script to find the blackberry OS version:

var ua = navigator.userAgent;
    if (ua.indexOf("BlackBerry") >= 0) {
        if (ua.indexOf("Version/") >= 0) { // ***User Agent in BlackBerry 6 and BlackBerry 7
            Verposition = ua.indexOf("Version/") + 8;
            TotLenght = ua.length;
            document.write("Jorgesys  BB OS Version :: " + ua.substring(Verposition, Verposition + 3));
        }
        else {// ***User Agent in BlackBerry Device Software 4.2 to 5.0
            var SplitUA = ua.split("/");
            document.write("Jorgesys BB OS Version :: " + SplitUA[1].substring(0, 3));
        }
    }

Reference