function MM_checkBrowser() {
	//v5.0 -- based on the default MM_checkBrowser() function from DW
	var NSvers = 4.0;
	var NSpass = 0;
	var NSnoPass = 1;
	var IEvers = 5.1;
	var IEpass = 0;
	var IEnoPass = 1;
	var OBpass = 0;
	var URL = "http://www.alpineaccess.com/external/browser.html";
	var altURL = "http://www.microsoft.com/windows/downloads/ie/getitnow.mspx";
	var newURL = '', userAgent=navigator.userAgent, version=0;
	if (userAgent.indexOf('Netscape') != -1) {
		version = parseFloat(userAgent.substring(userAgent.indexOf('Netscape')+9,userAgent.length));
		if (version >= NSvers) {
			if (NSpass > 0) {
				newURL = (NSpass == 1) ? URL : altURL;
			}
		}
		else {
			if (NSnoPass > 0) {
				newURL = (NSnoPass == 1) ? URL : altURL;
			}
		}
	}
	else if (userAgent.indexOf('MSIE') != -1) {
		version = parseFloat(userAgent.substring(userAgent.indexOf('MSIE')+4,userAgent.length));
		if (version >= IEvers) {
			if (IEpass > 0) {
				newURL = (IEpass == 1) ? URL : altURL;
			}
		}
		else {
			if (IEnoPass > 0) {
				newURL = (IEnoPass == 1) ? URL : altURL;
			}
		}
	}
	else if (OBpass > 0) {
		newURL = (OBpass == 1) ? URL : altURL;
	}
	if (newURL) {
		window.location = unescape(newURL);
		document.MM_returnValue = false;
	}
}