function ObterAltura ()

{
  if (typeof (window.innerHeight) == 'number')
    return window.innerHeight;
  else if (document.body && typeof (document.body.offsetHeight) == 'number')
    return document.body.offsetHeight;
  else
    return 0;
}

function ObterLargura ()

{
  if (typeof (window.innerWidth) == 'number')
    return window.innerWidth;
  else if (document.body && typeof (document.body.offsetWidth) == 'number')
    return document.body.offsetWidth;
  else
    return 0;
}