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.searchOS() //this.searchString(this.dataOS) || "an unknown OS";
		this.supportDOM2 = (document.getElementById) ? true : false;
	},
	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));
	},
	searchOS: function(){
		if( navigator.userAgent.indexOf( "Win" ) > 0 )	{
			if ( navigator.userAgent.indexOf( "98" ) > 0 ){
				return "Windows 98"	;
			}else if ( navigator.userAgent.indexOf( "3.1" ) > 0 ){
				return "Windows 3.1"	;
			}else if ( navigator.userAgent.indexOf( "Me" )  > 0 ){
				return "Windows Me"	;
			}else if ( navigator.userAgent.indexOf( "Windows NT" ) > 0 ){
				var tmpWindows = navigator.userAgent.match(/Windows\sNT\s?[\d.]{1,3}/);
				tmpWindows = tmpWindows.toString()
				var tmpVersion = tmpWindows.match(/[0-9.]{1,3}/)
				tmpVersion = parseFloat(tmpVersion);
				if ( tmpVersion <= 5 ){
					return "Windows 2000";
				}else if ( tmpVersion > 5 && tmpVersion < 6 ){
					return "Windows XP";
				}else if ( tmpVersion >= 6 ){
					return "Windows Vista";
				}
			}else{
				return "Windows Unknown" ;
			}
		}else if ( navigator.platform == "Mac" ){
			return "Mac";
		}else if ( navigator.platform == "Linux" ){
			return "Linux";
		}
		return "unknow";
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			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.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();