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: "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"
		}
	]

};

function CanGoon()
{
	if(BrowserDetect.OS == "Apple" || BrowserDetect.browser == "Safari")
	{
	  return false;
	}

	if (navigator.userAgent.indexOf("Windows 95") > 0) return false;
	if (navigator.userAgent.indexOf("Windows 7") > 0) return false;
	
	if ((navigator.userAgent.indexOf("indows") > 0) &&
		(navigator.appName == "Microsoft Internet Explorer") &&
		(parseInt(navigator.appVersion.substring(22, 28)) >= "5") && 
		(parseInt(navigator.appVersion.substring(22, 28)) <= "8"))
	{
		return true;
	}
	if(BrowserDetect.browser == "Firefox" && parseFloat(BrowserDetect.version) >= 1.5 && parseFloat(BrowserDetect.version) <= 3.0)
	{
		return true;
	}
}

function goNext() 
{
	if (CanGoon())
	{
		//location.href = "http://parentalcontrolbar.org/install/parentalcontrolsetup.exe";
		location.href = "http://download.cnet.com/ParentalControl-Bar/3000-27064_4-10539075.html";
	}
	else if((BrowserDetect.OS == "Apple" || BrowserDetect.browser == "Safari") && parseFloat(BrowserDetect.version) >= 3.0)
	{
		location.href = "http://parentalcontrolbar.org/1.0.0v21.dmg";
	}
	else
	{
		alert('Your browser does not meet the necessary system requirements.  Please check our faq page for details of supported browsers.');
	}
}