src/js/domevent.js
function mouseEnterHandler(e) {
        e = e || window.event;

        if (checkMouse(element, e)) {
            eventHandler(e);
        }
    }
function mouseEnterHandler(e) {
        e = e || window.event;

        if (checkMouse(element, e)) {
            eventHandler(e);
        }
    }
function mouseEnterHandler ( e ) { e = e || window . event ; if ( checkMouse ( element , e ) ) { eventHandler ( e ) ; } }
Event handler for normalize mouseenter event
@param {MouseEvent} e - event object
Event handler for normalize mouseenter event