var agt = navigator.userAgent.toLowerCase();

var os = 0;
var osVersion = 0;
var osFriendlyName = 'unknown';
var os64Bit = false;
var browser = 0;
var browserVersion = 0;
var browserFriendlyName = 'unknown';
var browser64Bit = false;
var jrePath = '';
var vbScriptPath = '';
var skipJava = false;
var isMetro = metrotest();

// Start OS/version Tests

if( agt.indexOf( 'cros' ) !=-1 ) {
    os = 'chromeos';
    osFriendlyName ='Chome OS'
    jrePath ='';
    skipJava = true;
}
if( agt.indexOf( 'mac' ) !=-1 ) {
    os = 'mac';
    osFriendlyName ='Macintosh'
    jrePath ='mac/mac.jsp';
}
if( agt.indexOf( 'ipad' ) !=-1 ) {
    os = 'iPad';
    osFriendlyName ='iPad'
    jrePath ='';
    skipJava = true;
}
if( agt.indexOf( 'iphone' ) !=-1 ) {
    os = 'iPhone';
    osFriendlyName ='iPhone'
    jrePath ='';
    skipJava = true;
}
if( agt.indexOf( 'lin' ) !=-1 ) {
    os = 'lin';
    osFriendlyName ='Linux'
    jrePath ='lin/lin.jsp';
}
if( agt.indexOf( 'android' ) !=-1 ||
    new RegExp(".*(.*Xoom.*)|(.*Nexus One.*)|(.*Dell Streak.*)|(.*ThinkPad Tablet.*)|(.*IdeaTab.*)|(.*Kindle.*)|(.*AT100.*)|(.*Transformer.*)|(.*Android; Tablet.*)|(.*webAgent Test Tablet.*)|(.*gt-p7510.*)|(.*gt-n8000.*)|(.*lenovo b6000.*)|(.*lenovo b8000.*)|(.*Pixel C.*)|(.*Pixel Slate.*).*").test(agt) ) {
    os = 'Android';
    osFriendlyName ='Android'
    jrePath ='';
    skipJava = true;
}
if( agt.indexOf( 'hpwos' ) !=-1 ) {
    os = 'hpwos';
    osFriendlyName ='HP webOS tablet'
    jrePath ='';
    skipJava = true;
}
if( agt.indexOf('win')!=-1 ){
    os = 'win';
    osFriendlyName = 'Windows';
    // Default all windows to 32bit JRE
    jrePath = 'http://java.com/en/download/index.jsp';
    if( agt.indexOf( 'wow64' ) != -1 || agt.indexOf( 'win64' ) != -1 ) {
        os64Bit = true;
    }
    if( agt.indexOf( 'windows 95' ) != -1 ) {
        osVersion = 1;
        osFriendlyName = 'Windows 95';
    }
    if( agt.indexOf( 'windows 98' ) != -1 ) {
        osVersion = 2;
        osFriendlyName = 'Windows 98';
    }
    if( agt.indexOf( 'nt 5.0' ) != -1 ) {
        osVersion = 5.0;
        osFriendlyName = 'Windows 2000';
    }
    if( agt.indexOf( 'nt 5.1' ) != -1 ) {
        osVersion = 5.1;
        osFriendlyName = 'Windows XP';
    }
    if( agt.indexOf( 'nt 5.2' ) != -1 ) {
        osVersion = 5.2;
        osFriendlyName = 'Windows 2003';
    }
    if( agt.indexOf( 'nt 6.0' ) != -1 ) {
        osVersion = 6.0;
        osFriendlyName = 'Windows Vista';
    }
    if( agt.indexOf( 'nt 6.1' ) != -1 ) {
        osVersion = 6.1;
        osFriendlyName = 'Windows 7';
    }
    if( agt.indexOf( 'nt 6.2' ) != -1 ) {
        osVersion = 6.2;
        osFriendlyName = 'Windows 8';
    }
    if( agt.indexOf( 'nt 6.3' ) != -1 ) {
        osVersion = 6.3;
        osFriendlyName = 'Windows 8.1';
    }
    if( os64Bit ) {
        osFriendlyName = osFriendlyName + ' 64Bit'
    }
}

//  Start Browser/version Tests

if( agt.indexOf( 'msie' )!=-1 || agt.indexOf( 'trident' )!=-1 ) {
    browser = 'msie';
    browserFriendlyName = 'Internet Explorer';
    if( agt.indexOf( 'win64' ) != -1 ) {
        browser64Bit = true;
        jrePath = 'http://java.com/en/download/index.jsp';
    }
    if( agt.indexOf( 'msie 5' ) != -1 ) {
        browserVersion = 5;
        browserFriendlyName = 'Internet Explorer 5.x';
    }
    if( agt.indexOf( 'msie 6' ) != -1 ) {
        browserVersion = 6;
        browserFriendlyName = 'Internet Explorer 6.x';
    }
    if( agt.indexOf( 'msie 7' ) != -1 ) {
        browserVersion = 7;
        browserFriendlyName = 'Internet Explorer 7.x';
    }
    if( agt.indexOf( 'msie 7' ) != -1 && agt.indexOf( 'trident/4.0' ) != -1 ) {
        browserVersion = 7;
        browserFriendlyName = 'Internet Explorer 8.x Compatibility View';
    }
    if( agt.indexOf( 'msie 7' ) != -1 && agt.indexOf( 'trident/5.0' ) != -1 ) {
        browserVersion = 7;
        browserFriendlyName = 'Internet Explorer 9.x Compatibility View';
    }
    if( agt.indexOf( 'msie 7' ) != -1 && agt.indexOf( 'trident/6.0' ) != -1 ) {
        browserVersion = 7;
        browserFriendlyName = 'Internet Explorer 10.x Compatibility View';
    }
    if( agt.indexOf( 'msie 7' ) != -1 && agt.indexOf( 'trident/7.0' ) != -1 ) {
        browserVersion = 7;
        browserFriendlyName = 'Internet Explorer 11.x Compatibility View';
    }
    if( agt.indexOf( 'msie 8' ) != -1 ) {
        browserVersion = 8;
        browserFriendlyName = 'Internet Explorer 8.0';
    }
    if( agt.indexOf( 'msie 9' ) != -1 ) {
        browserVersion = 9;
        browserFriendlyName = 'Internet Explorer 9.0';
    }
    if( agt.indexOf( 'msie 10' ) != -1 ) {
        browserVersion = 10;
        browserFriendlyName = 'Internet Explorer 10.0';
    }
    if( agt.indexOf( 'msie' ) == -1 && agt.indexOf( 'trident/7.0' ) != -1 ) {
        browserVersion = 11;
        browserFriendlyName = 'Internet Explorer 11.0';
    }
    if( browser64Bit ) {
        browserFriendlyName = browserFriendlyName + ' 64Bit';
    }
    if( agt.indexOf( 'chromeframe' ) != -1 ) {
        browserFriendlyName = browserFriendlyName + ' Google Chrome Frame JavaScript Engine';
    }
    if(isMetro){
        skipJava = true;
    }
}
if( agt.indexOf( 'firefox' )!=-1 ) {
    browser = 'firefox';
    browserFriendlyName = 'Firefox';
}
if( agt.indexOf( 'safari' )!=-1 ) {
    browser = 'safari';
    browserFriendlyName = 'Safari';
}
if( agt.indexOf( 'opera' )!=-1 ) {
    browser = 'opera';
    browserFriendlyName = 'Opera';
}
if( agt.indexOf( 'applewebkit' )!=-1 ) {
    browser = 'applewebkit';
    browserFriendlyName = 'AppleWebKit';
}
// Chrome needs to be 2nd to last
if( agt.indexOf( 'chrome/' )!=-1 ) {
    browser = 'chrome';
    browserFriendlyName = 'Chrome';
    skipJava = true;
}

// Edge probably needs to be after Chrome now
if( agt.indexOf( 'edge' ) != -1 ) {
    browser = 'edge';
    browserFriendlyName = 'Edge';
    jrePath ='';
    skipJava = true;
}


// if ANY SLATE or MOBILE device skipJava

if( true ) {
    skipJava = true;
}

var errorName = null;
function metrotest() {
    var supported = null;
    try {
        new ActiveXObject("");
    }
    catch (e) {
        // FF has ReferenceError here
        errorName = e.name;
    }
    try {
        supported = !!new ActiveXObject("htmlfile");
    } catch (e) {
        supported = false;
    }
    if(errorName != 'ReferenceError' && supported==false){
        supported = false;
    }else{
        supported =true;
    }
    return !supported;
}