addTouchEvents = function(elem, fn) {
var types = ['touchstart', 'touchend', 'touchmove', 'touchcancel'];
for (var i = 0; i < types.length; i++) {
addTouchEvents = function(elem, fn) {
var types = ['touchstart', 'touchend', 'touchmove', 'touchcancel'];
for (var i = 0; i < types.length; i++) {