브라우저 버전 체크

function isBrowserCheck(){ 
     var agt = navigator.userAgent.toLowerCase(); 
     if (agt.indexOf("chrome") != -1) return 'Chrome'; 
     if (agt.indexOf("opera") != -1) return 'Opera'; 
     if (agt.indexOf("staroffice") != -1) return 'Star Office'; 
     if (agt.indexOf("webtv") != -1) return 'WebTV'; 
     if (agt.indexOf("beonex") != -1) return 'Beonex'; 
     if (agt.indexOf("chimera") != -1) return 'Chimera'; 
     if (agt.indexOf("netpositive") != -1) return 'NetPositive'; 
     if (agt.indexOf("phoenix") != -1) return 'Phoenix'; 
     if (agt.indexOf("firefox") != -1) return 'Firefox'; 
     if (agt.indexOf("safari") != -1) return 'Safari'; 
     if (agt.indexOf("skipstone") != -1) return 'SkipStone'; 
     if (agt.indexOf("netscape") != -1) return 'Netscape'; 
     if (agt.indexOf("mozilla/5.0") != -1) return 'Mozilla'; 
     if (agt.indexOf("msie") != -1) {  
             var rv = -1;
             if (navigator.appName == 'Microsoft Internet Explorer') { 
                 var ua = navigator.userAgent; 
                 var re = new RegExp("MSIE ([0-9]{1,}[.0-9]{0,})"); 
                 if (re.exec(ua) != null) rv = parseFloat(RegExp.$1); 
             }
             return 'Internet Explorer '+rv; 
       } 
 } 
 function getOS(){
     var os, ua = navigator.userAgent;
       if (ua.match(/Win(dows )?NT 6.0/)) {
         os = "Windows Vista";
       } else if (ua.match(/Win(dows )?(NT 5.1|XP)/)) {
         os = "Windows XP";
       } else {
         if ((ua.indexOf("Windows NT 5.1") != -1) || (ua.indexOf("Windows XP") != -1)) {
           os = "Windows XP";
         } else if ((ua.indexOf("Windows NT 7.0") != -1) || (ua.indexOf("Windows NT 6.1") != -1)) {
           os = "Windows 7";
         } else if ((ua.indexOf("Windows NT 8.0") != -1) || (ua.indexOf("Windows NT 6.2") != -1)) {
           os = "Windows 8";
         } else if ((ua.indexOf("Windows NT 8.1") != -1) || (ua.indexOf("Windows NT 6.3") != -1)) {
           os = "Windows 8.1";
         } else if ((ua.indexOf("Windows NT 10.0") != -1) || (ua.indexOf("Windows NT 6.4") != -1)) {
           os = "Windows 10";
         } else if ((ua.indexOf("iPad") != -1) || (ua.indexOf("iPhone") != -1) || (ua.indexOf("iPod") != -1)) {
           os = "Apple iOS";
         } else if (ua.indexOf("Android" != -1)) {
           os = "Android Phone";
         } else if (ua.match(/Win(dows )?NT( 4.0)?/)) {
           os = "Windows NT";
         } else if (ua.match(/Mac|PPC/) || (ua.indexOf("Mac OS") != -1)) {
           os = "Mac OS";
         } else if (ua.match(/Linux/)) {
           os = "Linux";
         } else if (ua.match(/(Free|Net|Open)BSD/)) {
           os = RegExp.$1 + "BSD";
         } else if (ua.match(/SunOS/)) {
           os = "Solaris";
         }
       }
       if (os.indexOf("Windows") != -1) {
         if (navigator.userAgent.indexOf('WOW64') > -1 || navigator.userAgent.indexOf('Win64') > -1) {
           os += ' 64bit';
         } else {
           os += ' 32bit';
         }
       } 
       return os;
}