SAMYANG/m/asset/js/sy.m.plugin.js
//binding the mousemove when the mouse's middle button is released
binding the mousemove when the mouse's middle button is released
binding the mousemove when the mouse ' s middle button is released
function mouseDownHandler(e) {
            if (e.which == 2) {
                oldPageY = e.pageY;
                container.on('mousemove', mouseMoveHandler);
            }
        }
function mouseDownHandler ( e ) { if ( e . which == 2 ) { oldPageY = e . pageY ; container . on ( 'mousemove' , mouseMoveHandler ) ; } }
binding the mousemove when the mouse's middle button is released
binding the mousemove when the mouse ' s middle button is released
//middle button