twitterkeys.user.js

// ==UserScript==
// @name           TwitterKeys
// @namespace      *
// @description    use twitter keys directly on the twitter site
// @include        http://twitter.com/*
// @include        https://twitter.com/*
// ==/UserScript==

twitterkeys_url = 'http://thenextweb.com/TwitterKeys/keys.php';

function toggleFrame()
{
	return  "(function() {" +
		"if(document.getElementById('twitterkeys_frame').style.display == 'none') {"+
		"document.getElementById('twitterkeys_frame').style.display = 'inline'; } else {"+
		"document.getElementById('twitterkeys_frame').style.display = 'none'; }"+
		"})()"
}

(function() {
	inputbox = document.getElementById('status').parentNode;

	var framediv = document.createElement('div');
	framediv.style.width = '100%';
	framediv.style.postion = 'absolute';
	framediv.style.left = '0px';
	framediv.style.textAlign = 'left';

	var closelink = document.createElement('a');
	closelink.innerHTML = 'toggle twitterkeys';
	closelink.href = 'javascript:'+toggleFrame();

	var frame  = document.createElement('iframe');
	frame.style.width = '100%';
	frame.style.height = '300px';
	frame.style.border = '0';
	frame.style.display = 'none';
	frame.id = 'twitterkeys_frame';
	frame.src = twitterkeys_url;
	framediv.appendChild(closelink);
	framediv.appendChild(frame);
	inputbox.appendChild(framediv);
})();