twitterautopager.user.js

// ==UserScript==
// @name           twitter.AutoPager
// @namespace      http://ss-o.net/
// @version        0.1
// @include        http://twitter.com/*
// @include        https://twitter.com/*
// ==/UserScript==

(function autopager(unsafeWindow,loaded){
	if (!loaded && window.opera && document.readyState == 'interactive') {
		document.addEventListener('DOMContentLoaded', function(){autopager(unsafeWindow,true);}, false);
		return;
	}
	var state = true;
	var remainHeight = 400;
	var loading = false;
	var filter = function(){
		loading = false;
	};
	if (typeof unsafeWindow.onPageChange === 'function') {
		var _onPageChange = unsafeWindow.onPageChange;
		unsafeWindow.onPageChange = function(){
			_onPageChange();
			filter();
		};
	} else {
		unsafeWindow.onPageChange = filter;
	}
	window.addEventListener('scroll', function(){
		if (loading) return;
		var remain = document.documentElement.scrollHeight - window.innerHeight - window.pageYOffset;
		if (state && remain < remainHeight)
			click_more();
	}, false);
	function click_more(){
		var event = document.createEvent('MouseEvents');
		event.initMouseEvent('click', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
		get_more().dispatchEvent(event);
		loading = true;
	}
  function get_more(){
    return document.getElementById('more');
  }
})(this.contentWindow||this.unsafeWindow||window,0);