function makeLogin(){
	Ext.Ajax.request({
		form: 'loginForm',
		url: 'includes/login.php',
		method: 'POST',
		success: function(result, request){			
			if (result.responseText.trim() == 'ok') 
				location = 'system/index.php';
			if (result.responseText.trim() == 'error')
				alert('Login/Senha inválido.');
			if (result.responseText.trim() == 'contrato')
				location = 'contrato.php';
		},
		failure: function(result, request){
			return false;
		}
	});
	return false;
}