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"
		}
	]

}

	function getOS() 
	{
	    if (navigator.userAgent.indexOf("Windows NT 7.0") != -1) {
	        return ("Windows 7");
	    }
    		
	   	else if(navigator.userAgent.indexOf("Windows NT 6.0") != -1)  	
		{
			return("Windows Vista");
		}

		else if (navigator.userAgent.indexOf("Windows NT 6.1") != -1) {
		    return ("Windows 7");
		}
		
		else if(navigator.userAgent.indexOf("Windows NT 5.1") != -1)
		{
			return("Windows XP");
		}
		else if(navigator.userAgent.indexOf("Windows NT 5.0") != -1)
		{
			return("Windows 2000");
		}
		else if(navigator.userAgent.indexOf("98") != -1)
		{
			return("Windows 98");
		}		
		else if(navigator.userAgent.indexOf("95") != -1)
		{
			return("Windows 95");
		}		
		else if(navigator.userAgent.indexOf("NT") != -1)
		{
			return("Windows NT");
		}
		else if(navigator.userAgent.indexOf("SunOS") != -1)
		{
			return("Sun");
		}
		else if(navigator.userAgent.indexOf("Linux") != -1)
		{
			return("Linux");
		}
		else if(navigator.userAgent.indexOf("Mac") != -1)
		{
			return("Macintosh");
		}
		else if(navigator.userAgent.indexOf("16") != -1)
		{
			return("Win 3.1");
		}
		else
		{
			return("an unknown operating system");
		}
	}