browser_info.js

function get_browser_info(){
    var ua=navigator.userAgent,tem,M=ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || []; 
	//console.log(M[0]+" "+M[1]);
    if(/trident/i.test(M[1])){
        tem=/\brv[ :]+(\d+)/g.exec(ua) || []; 
        return {name:'IE',version:(tem[1]||'')};
        }   
    if(M[1]==='Chrome'){
        tem=ua.match(/\bOPR\/(\d+)/)
        if(tem!=null)   {return {name:'Opera', version:tem[1], chromeversion: M[2]};}
		// next
		tem=ua.match(/\bAmigo\/(\d+)/)
		if(tem!=null)   {return {name:'Amigo', version:tem[1], chromeversion: M[2]};}
        // next
		tem=ua.match(/\bYaBrowser\/(\d+)/)
		if(tem!=null)   {return {name:'Yandex', version:tem[1], chromeversion: M[2]};}
		
		for (var i=0; i<navigator.plugins.length; i++)
			if (navigator.plugins[i].name == 'Chromium PDF Viewer') {return {name:'Chromium', version:tem[1], chromeversion: M[2]};}
        }		
    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 {
      name: M[0],
      version: M[1]
    };
 }