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();

function fcBD_DrawMsg(msg) {
  document.write("<div style='position: fixed; top: 0px; height: 20px; width: 100%; background-image: url(http://www.forecepts.com/ie/bg.gif); background-color: #000; line-height: 20px; padding-left: 10px; padding-right: 10px'><span style='background-color: #c00; color: #fff; font-family; Arial, Helvetica, Tahoma; font-size: 11px'>" + msg + "</span></div>");
}

function fcBD_DefaultIE7() {
  if(BrowserDetect.browser == "Explorer") {
    if(BrowserDetect.version < 7) {
      var msg = "It was detected that you are using <b>"+BrowserDetect.browser+"</b> version <b>"+BrowserDetect.version+"</b>. This website is optimised for Internet Explorer version 7";
      fcBD_DrawMsg(msg);
    }
    else if (BrowserDetect.version >= 8)  { 
      var msg = "It was detected that you are using <b>"+BrowserDetect.browser+"</b> version <b>"+BrowserDetect.version+"</b>. This website is optimised for Internet Explorer version 7. Please turn on the Compatibility Mode to display this website properly.";
      fcBD_DrawMsg(msg);
    }
  }
}

function fcBD_DefaultIE8() {
  if(BrowserDetect.browser == "Explorer") {
    if(BrowserDetect.version < 8) {
      var msg = "It was detected that you are using <b>"+BrowserDetect.browser+"</b> version <b>"+BrowserDetect.version+"</b>. This website is optimised for Internet Explorer version 8. <a href='http://www.microsoft.com/windows/internet-explorer/default.aspx' style='color: #fff'><b>Upgrade Internet Explorer Now</b></a>";
      fcBD_DrawMsg(msg);
    }
  }
}