Get Web Browser, version and OS

get_browser_version_os

function get_browser(){
    var ua=navigator.userAgent,tem,M=ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || []; 
    if(/trident/i.test(M[1])){
        tem=/\brv[ :]+(\d+)/g.exec(ua) || []; 
        return 'IE '+(tem[1]||'');
        }   
    if(M[1]==='Chrome'){
        tem=ua.match(/\bOPR\/(\d+)/)
        if(tem!=null)   {return 'Opera '+tem[1];}
        }   
    M=M[2]? [M[1], M[2]]: [navigator.appName, navigator.appVersion, '-?'];
    if((tem=ua.match(/version\/(\d+)/i))!=null) {M.splice(1,1,tem[1]);}
    return M[0];
    }

function get_browser_version(){
    var ua=navigator.userAgent,tem,M=ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];                                                                                                                         
    if(/trident/i.test(M[1])){
        tem=/\brv[ :]+(\d+)/g.exec(ua) || [];
        return 'IE '+(tem[1]||'');
        }
    if(M[1]==='Chrome'){
        tem=ua.match(/\bOPR\/(\d+)/)
        if(tem!=null)   {return 'Opera '+tem[1];}
        }   
    M=M[2]? [M[1], M[2]]: [navigator.appName, navigator.appVersion, '-?'];
    if((tem=ua.match(/version\/(\d+)/i))!=null) {M.splice(1,1,tem[1]);}
    return M[1];
    }
    
function get_os() {
        var OSName="unknown OS";
        if (navigator.userAgent.match(/Windows/i))
            OSName="Windows";
        if (navigator.userAgent.match(/Mac/i))
            OSName="OSX";
        if (navigator.userAgent.match(/Linux/i))
            OSName="Linux";
        if (navigator.userAgent.match(/Android/i))
            OSName="Android";
        if (navigator.userAgent.match(/iPad/i) || navigator.userAgent.match(/iPhone/i) || navigator.userAgent.match(/iPod/i))
            OSName="iOS";
        return OSName;
    }