function BrowserDetect() {
	var browserInfo = navigator.userAgent.toLowerCase();
	var vers
	
	//Check for the browser version and set the 'ver' variable accordingly
	if (browserInfo.indexOf('msie 6.0')) vers = "ie6";
	else if (browserInfo.indexOf('msie 7.0')) vers = "ie7";
	
	if (vers != "ie6" && vers != "ie7") {
		alert("This site is optimized for Internet Explorer 6.0 or greater. Please open the site in it.");
		window.location="about:blank"
	}
}