javascript 브라우저 IE 체크

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

    if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./))  {
        return true;
    }

    return false;
}
var IE = isIE();