function ShowPopup(url, titulo, width, height) {
    //var controlCollection = ASPxClientControl.GetControlCollection();
    aspxPopup.SetHeaderText(titulo);
    aspxPopup.SetContentHTML("Carregando...");
    aspxPopup.SetContentUrl(url);
    aspxPopup.Show();
    aspxPopup.SetSize(width, height);
    aspxPopup.UpdatePosition();
    //return true;
}