Get IE Version

getIEVersion.js

function getIEVersion() {
	var ua = window.navigator.userAgent,
		msie = ua.indexOf("MSIE ");

	if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./)) {
		return parseInt(ua.substring(msie + 5, ua.indexOf(".", msie)));
	} else {
		return -1;
	}

   return false;
}

var ie = getIEVersion();