function initLogin(field)
{
	eval(field+'.focus()');
}

function initKeys(event, referer)
{
	execOnKeyPressed(event, 'login(\''+ referer +'\')', '13');
}

function login(referer)
{
	if (isEmpty(document.formu_browser.user)) popUpWarning("Es obligatorio rellenar el campo 'Usuario'", document.formu_browser.user);
	else if (isEmpty(document.formu_browser.key)) popUpWarning("Es obligatorio rellenar el campo 'Clave'", document.formu_browser.key);
	else sendForm(document.formu_browser, '/login.jsp?referer='+referer);
}