gistfile1.txt

    var versionStart = USER_AGENT.indexOf("AppleWebKit/") + "AppleWebKit/".length,
        versionEnd = USER_AGENT.indexOf(" ", versionStart),
        versionString = USER_AGENT.substring(versionStart, versionEnd),
        versionDivision = versionString.indexOf('.'),
        majorVersion = parseInt(versionString.substring(0, versionDivision)),
        minorVersion = parseInt(versionString.substr(versionDivision + 1));

    if((USER_AGENT.indexOf("Safari") !== CPNotFound && (majorVersion >= 525 && minorVersion > 14)) || USER_AGENT.indexOf("Chrome") !== CPNotFound)
        PLATFORM_FEATURES |= CPJavascriptRemedialKeySupport;