// JavaScript Document
function tamaņo_capa()
{
  size = 1050;  
  size_auto = contenedor.offsetHeight;
  
  if (size_auto < size)
  {
    document.getElementById('contenedor').style.height = "size";  
  }
  
  else
  {
    document.getElementById('contenedor').style.height = "auto";
  }
  
}