function aTerminos() {
    document.getElementById('framepantallas').src='upload/pantallas/pantallas.aspx?fp=terminos';
    document.getElementById('ibRecetasn').src='images/btn_recetas.png';
    document.getElementById('ibJuega').src='images/btn_juega.png';
    document.getElementById('ibPinta').src='images/btn_pinta.png';
    
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( 'aInicioNinos' );
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
    
  } 
  
function aPoliticas() {
    document.getElementById('framepantallas').src='upload/pantallas/pantallas.aspx?fp=politica';
    document.getElementById('ibRecetasn').src='images/btn_recetas.png';
    document.getElementById('ibJuega').src='images/btn_juega.png';
    document.getElementById('ibPinta').src='images/btn_pinta.png';
    
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( 'aInicioNinos' );
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
  
  } 
   
function aGlosario() {
    document.getElementById('framepantallas').src='upload/pantallas/pantallas.aspx?fp=glosario';
    document.getElementById('ibRecetasn').src='images/btn_recetas.png';
    document.getElementById('ibJuega').src='images/btn_juega.png';
    document.getElementById('ibPinta').src='images/btn_pinta.png';
    
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( 'aInicioNinos' );
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
  
  } 
  
function aSitemap() {
    document.getElementById('framepantallas').src='upload/pantallas/pantallas.aspx?fp=sitemap';
    document.getElementById('ibRecetasn').src='images/btn_recetas.png';
    document.getElementById('ibJuega').src='images/btn_juega.png';
    document.getElementById('ibPinta').src='images/btn_pinta.png';
    
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( 'aInicioNinos' );
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
  
  }