function ConfigTest (){
	BrowserOSDetect.init();
	this.minimumBrowsers = [];
	this.minimumOSs = [];
}

ConfigTest.prototype.addBrowser = function(name, version) {
	this.minimumBrowsers.push({name: name, version: version});
}

ConfigTest.prototype.addOS = function(name, version) {
	this.minimumOSs.push({name: name, version: version});
}


ConfigTest.prototype.hasMinimumBrowser = function() {
	// check if the current browser matches any of the allowed browsers
	for (var i=0; i<this.minimumBrowsers.length; i++) {
		var minimumBrowser = this.minimumBrowsers[i];
		if (BrowserOSDetect.browser == minimumBrowser.name) {
			if (!minimumBrowser.version) return true;
			if (BrowserOSDetect.version >= minimumBrowser.version) {
				return true;
			}
			return false;
		};
	}
	return false;
}

ConfigTest.prototype.hasCookies = function() {
	return navigator.cookieEnabled;
}

ConfigTest.prototype.hasOS = function() {
	// check if the current OS matches any of the allowed OSs
	for (var i=0; i<this.minimumOSs.length; i++) {
		var minimumOS = this.minimumOSs[i];
		
		if (BrowserOSDetect.OS == minimumOS.name) {
			if (!minimumOS.version) return true;
			if (BrowserOSDetect.OSversion == minimumOS.version) {
				return true;
			}
			//return false;
		};
	}
	return false;
}

ConfigTest.prototype.hasMinimumResolution = function(width, height) {
	return (screen.width >= width) && (screen.height >= height);
}

ConfigTest.prototype.hasMinimumFlashVersion = function (reqMajorVer, reqMinorVer, reqRevision) {
	return DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision);
}







// Browser detection utility
var BrowserOSDetect = {
	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";
		this.OSversion = this.searchString(this.dataOSVersion) || "An unknown OS version";
	},
	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));
	},
	searchOSVersion: function (dataString) {
			var index = dataString.indexOf(this.versionSearchString);
			if (index == -1) return;
			return dataString.substring(index+this.versionSearchString.length+1);
	},
	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.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{
			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: "iPhone",
			identity: "iPhone"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	],
	dataOSVersion : [
		{
			string: navigator.userAgent,
			subString: "NT 6.0",
			identity: "Vista"
		},
		{
			string: navigator.userAgent,
			subString: "NT 5.2",
			identity: "Server 2003"
		},
		{
			string: navigator.userAgent,
			subString: "NT 5.1",
			identity: "XP"
		},
		{
			string: navigator.userAgent,
			subString: "NT 5.01",
			identity: "2000 SP1"
		},
		{
			string: navigator.userAgent,
			subString: "NT 5.0",
			identity: "2000"
		},
		{
			string: navigator.userAgent,
			subString: "NT 4.0",
			identity: "NT 4.0"
		},
		{
			string: navigator.userAgent,
			subString: "Windows 98",
			identity: "98"
		},
		{
			string: navigator.userAgent,
			subString: "Windows 95",
			identity: "95"
		},
		{
			string: navigator.userAgent,
			subString: "Windows CE",
			identity: "CE"
		},
		{
			string: navigator.userAgent,
			subString: "Mac OS X",
			identity: "OS X"
		}
	]
};