var BrowserDetect = {
  init: function () {
    this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
    this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
    this.OS = this.searchString(this.dataOS) || "an unknown OS";
  },
  searchString: function (data) {
    for (var i = 0; i < data.length; i++) {
      var dataString = data[i].string;
      var dataProp = data[i].prop;
      this.versionSearchString = data[i].versionSearch || data[i].identity;
      if (dataString) {
        if (dataString.indexOf(data[i].subString) != -1)
          return data[i].identity;
      }
      else if (dataProp)
        return data[i].identity;
    }
  },
  searchVersion: function (dataString) {
    var index = dataString.indexOf(this.versionSearchString);
    if (index == -1) return;
    return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));
  },
  dataBrowser: [
		{
		  string: navigator.userAgent,
		  subString: "Chrome",
		  identity: "Chrome"
		},
		{ string: navigator.userAgent,
		  subString: "OmniWeb",
		  versionSearch: "OmniWeb/",
		  identity: "OmniWeb"
		},
		{
		  string: navigator.vendor,
		  subString: "Apple",
		  identity: "Safari",
		  versionSearch: "Version"
		},
		{
		  prop: window.opera,
		  identity: "Opera"
		},
		{
		  string: navigator.vendor,
		  subString: "iCab",
		  identity: "iCab"
		},
		{
		  string: navigator.vendor,
		  subString: "KDE",
		  identity: "Konqueror"
		},
		{
		  string: navigator.userAgent,
		  subString: "Firefox",
		  identity: "Firefox"
		},
		{
		  string: navigator.vendor,
		  subString: "Camino",
		  identity: "Camino"
		},
		{		// for newer Netscapes (6+)
		  string: navigator.userAgent,
		  subString: "Netscape",
		  identity: "Netscape"
		},
		{
		  string: navigator.userAgent,
		  subString: "MSIE",
		  identity: "Explorer",
		  versionSearch: "MSIE"
		},
		{
		  string: navigator.userAgent,
		  subString: "Gecko",
		  identity: "Mozilla",
		  versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
		  string: navigator.userAgent,
		  subString: "Mozilla",
		  identity: "Netscape",
		  versionSearch: "Mozilla"
		}
	],
  dataOS: [
		{
		  string: navigator.platform,
		  subString: "Win",
		  identity: "Windows"
		},
		{
		  string: navigator.platform,
		  subString: "Mac",
		  identity: "Mac"
		},
		{
		  string: navigator.userAgent,
		  subString: "iPhone",
		  identity: "iPhone/iPod"
		},
		{
		  string: navigator.platform,
		  subString: "Linux",
		  identity: "Linux"
		}
	]

};
BrowserDetect.init();