IE Detect Script

var BrowserDetect = {
  init: function () {
      this.browser = this.searchString(this.dataBrowser) || "Other";
      this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "Unknown";
  },
  searchString: function (data) {
      for (var i = 0; i < data.length; i++) {
          var dataString = data[i].string;
          this.versionSearchString = data[i].subString;

          if (dataString.indexOf(data[i].subString) !== -1) {
              return data[i].identity;
          }
      }
  },
  searchVersion: function (dataString) {
      var index = dataString.indexOf(this.versionSearchString);
      if (index === -1) {
          return;
      }

      var rv = dataString.indexOf("rv:");
      if (this.versionSearchString === "Trident" && rv !== -1) {
          return parseFloat(dataString.substring(rv + 3));
      } else {
          return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));
      }
  },

  dataBrowser: [
      {string: navigator.userAgent, subString: "Edge", identity: "MS Edge"},
      {string: navigator.userAgent, subString: "MSIE", identity: "Explorer"},
      {string: navigator.userAgent, subString: "Trident", identity: "Explorer"},
      {string: navigator.userAgent, subString: "Firefox", identity: "Firefox"},
      {string: navigator.userAgent, subString: "Opera", identity: "Opera"},  
      {string: navigator.userAgent, subString: "OPR", identity: "Opera"},  

      {string: navigator.userAgent, subString: "Chrome", identity: "Chrome"}, 
      {string: navigator.userAgent, subString: "Safari", identity: "Safari"}       
  ]
};

BrowserDetect.init();
document.write("You are using <b>" + BrowserDetect.browser + "</b> with version <b>" + BrowserDetect.version + "</b>");