To detect if i device supports touch events with a jquery scroll function

detect-touch.js

var isTouch = function () {
	return 'ontouchend' in document;
}

scroll-page.js

/* unbind first to prevent double binding of action */
$(window).unbind(isTouch() ? 'touchmove' : 'scroll');
$(window).bind(isTouch() ? 'touchmove' : 'scroll', function(){
  /*callback function*/
});