Userscripts.org

// ==UserScript==
// @name           UKNova Login
// @namespace      http://regionaltraffic.co.uk/
// @include        http://www.uknova.com/wsgi/login
// @include	   http://www.uknova.com/wsgi/torrent
// ==/UserScript==

var iTimerID = window.setInterval(function()
{
	var eButton = document.getElementById("login-submit-button");
	if (eButton)
	{
		window.clearInterval(iTimerID);
		eButton.click();
	}
}, 500);