function getIEVersionNumber(ieversion) {
	var ua = navigator.userAgent;
	var MSIEOffset = ua.indexOf("MSIE ");

	if (MSIEOffset == -1) { //Not using IE - don't redirect
		return 0;
	} else {
		browser_version = parseFloat(ua.substring(MSIEOffset + 5, ua.indexOf(";", MSIEOffset)));
		
		if (browser_version <= ieversion) { //IE version is less than or equal to version specified to redirect
			return 1;
		}
		
		else { //IE version is acceptable - don't redirect
			return 0;
		}
	}
}