function oculta() {
  document.getElementById('negro').style.display='none';
    document.getElementById('video').style.display='none';
	document.getElementById('video').style.height = '0px';
  document.getElementById('cerrar').style.display='none';
  document.getElementById('cerrar').style.height = '0px';
 }
 function muestra() {
  document.getElementById('negro').style.height = '100%';
  document.getElementById('negro').style.display='block';
  document.getElementById('video').style.display='block';
  	document.getElementById('video').style.height = '100%';
  document.getElementById('cerrar').style.height = '100%';
  document.getElementById('cerrar').style.display='block';
 }
function reinicia() {  
  document.location.href='http://www.cu-cisneros.es';
 }