// Determine OS, and browser.
	var OS;
	if (navigator.userAgent.indexOf("Mac")>-1){
		OS = "MAC";
	} else if (navigator.userAgent.indexOf("Win")>-1) {
		OS = "WIN";
	} else {
		OS = "OTHER";
	}

	var browser;
	if (navigator.appName == "Netscape") {
		browser = "NN";
	} else if (navigator.appName == "Microsoft Internet Explorer") {
		browser = "IE";
	} else {
		browser = "OTHER";
	}

	var bversion;
	if (parseInt(navigator.appVersion) <= 3) {
		bversion = 3;
	} else if (parseInt(navigator.appVersion) == 4) {
		bversion = 4;
	 } else if (parseInt(navigator.appVersion) >= 5) {
	 	bversion = 5;
	 }