function myBrowser(){
          var userAgent = navigator.userAgent;
          var isOpera = userAgent.indexOf("Opera") > -1; //Opera
          var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //IE
          var isFF = userAgent.indexOf("Firefox") > -1; //Firefox
          var isSafari = userAgent.indexOf("Safari") > -1; //Safari
          if (isIE) {
              var IE5 = IE55 = IE6 = IE7 = IE8 = false;
              var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
              reIE.test(userAgent);
              var fIEVersion = parseFloat(RegExp["$1"]);
              IE55 = fIEVersion == 5.5;
              IE6 = fIEVersion == 6.0;
              IE7 = fIEVersion == 7.0;
              IE8 = fIEVersion == 8.0;
              if (IE55) {
                  return "IE55";
              }
              if (IE6) {
                  return "IE6";
              }
              if (IE7) {
                  return "IE7";
              }
              if (IE8) {
                  return "IE8";
              }
          }//isIE end
          if (isFF) {
              return "FF";
          }
          if (isOpera) {
              return "Opera";
          }
      }