var BrowserDetect = {
	init: function () {
		var agt = navigator.userAgent;
		var apv = navigator.appVersion;
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(agt) || this.searchVersion(apv) || "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));
	},
	searchOSVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		var index2 = dataString.indexOf(";",index+this.versionSearchString.length+1);
		if ( index2 == -1 ) return;
		return dataString.substring(index+this.versionSearchString.length+1,index2);
	},
	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.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{		// for Netscape 9.0 (which uses the Firefox 9.0)
			string: navigator.userAgent,
			subString: "Navigator",
			versionSearch: "Navigator",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			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"
		}
	]

};
BrowserDetect.init();

function getJavaVersion() {
		
	// attempt to query the Java handler
	var j=window.java;
	try {
		if ( typeof j != "undefined" && typeof j.lang != "undefined" && typeof j.lang.System != "undefined" ) {
			return(j.lang.System.getProperty("java.version"));
		}
	}
	catch(e) {}

	/*
	// look through mime types (NOTE: This doesn't help determine which *version* is actually being used)
	var javaVersion = "0";
	if( navigator.mimeTypes ) {
		for ( var i=0; i < navigator.mimeTypes.length; i++ ) {
			if ( navigator.mimeTypes[i].type != null ) {
				var index = navigator.mimeTypes[i].type.indexOf("application/x-java-applet;jpi-version=");
				document.write(navigator.mimeTypes[i].type + "<br>");
				if ( index != -1 ) {
					var mimeVersion = navigator.mimeTypes[i].type.substring(index+38);
					mimeVersion = mimeVersion.replace("_",".");
					if ( javaVersion == null ) {
						javaVersion = mimeVersion;
					} else if ( javaVersion < mimeVersion ) { 
						javaVersion = mimeVersion;
					}
				}
			}
		}
	}
	if ( javaVersion != "0" ) return (javaVersion);

	// review plugins (how does this help???)
	// see http://forum.java.sun.com/thread.jspa?threadID=168544
	navigator.plugins.refresh(false);
	if ( true ) {			
		for ( var i=0; i < navigator.plugins.length; i++) {
			//for (j = 0; j < navigator.plugins.length; j++) {
				document.write(navigator.plugins[i].name);
				document.write("<font color=red>" + navigator.plugins[i].type + "</font>");
				document.write("<br>");
				// "application/x-java-applet;version>=1.3"
			//}
		}
	}
	*/

	// not known
	return(null);
}