function BrowserDetect () {
	this.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 ;
		}
	}

	this.searchVersion = function (dataString) {
		var index = dataString.indexOf (this.versionSearchString) ;
		if (index == -1) return ;
		return parseFloat (dataString.substring (index + this.versionSearchString.length + 1)) ;
	}

	this.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"
		}
	] ;

	this.dataOS = [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},

		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},

		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	] ;

	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" ;
}