function calendarFilter(filterName){
    
      var container = document.getElementById('container');
    
      var charlas = 'src=di63ob52r0ptfbr78p33qn2qm0%40group.calendar.google.com&color=%236B3304&';
      var dharmaChavos = 'src=jfbmmocvm8d0o2dq3bb7u7t2pg%40group.calendar.google.com&color=%232F6309&';
      var dharmaNinos = 'src=qmsv9d0lr8pj7e1rr47vgthjf8%40group.calendar.google.com&color=%23875509&';
      var eventos = 'src=i1abarm35pm7c09rhh0j0f0rl4%40group.calendar.google.com&color=%2342104A&';
      var puyhas = 'src=ule7d57dbhibj6lbgjjqj54o3k%40group.calendar.google.com&color=%23B1365F&src=vscuta29mdsl4rv96j2tg1gums%40group.calendar.google.com&color=%23711616&';
      var pfCentro = 'src=ol7p2t1iah6dnegi1g9n2t427s%40group.calendar.google.com&color=%235F6B02&';
      var pfmCentro = 'src=pivl64959eg1rffe25hcfqhhdc%40group.calendar.google.com&color=%23125A12&';
      var pgCelaya = 'src=l5rij95u5dgaq7hgs1hhvi3100%40group.calendar.google.com&color=%23853104&';
      var pgCentro = 'src=sukhavatical%40gmail.com&color=%232952A3&';
      var pgHacienda = 'src=s3ncb3c0uv5t2p7ugotmno4gns%40group.calendar.google.com&color=%23182C57&';
      var pgJardines = 'src=qhhmcu88un1ef194t7jipnbac8%40group.calendar.google.com&color=%231B887A&';
      var pgSanJuan = 'src=mcdohno9dhc0m8hilunrbt51c0%40group.calendar.google.com&color=%23B1440E&';
      var pgSanMiguel = 'src=gvoilnujf06hva7umf8emflr24%40group.calendar.google.com&color=%235229A3&';
      var pgTequis = 'src=g8keop4403fmnpq840a592tnek%40group.calendar.google.com&color=%23333333&';
      var pgYingYang = 'src=pt2urh2opqkr13cogci5tpakkg%40group.calendar.google.com&color=%23865A5A&';
      var retiros = 'src=q3kvboatqakv7qkbbkq29l3vvs%40group.calendar.google.com&color=%23AB8B00&';
      var yts = 'src=vscuta29mdsl4rv96j2tg1gums%40group.calendar.google.com&color=%23711616&';  
      
      var allCals = charlas + dharmaChavos + dharmaNinos + eventos + puyhas + 
          pfCentro + pfmCentro + pgCelaya + pgCentro + pgHacienda + pgJardines +
          pgSanJuan + pgSanMiguel + pgTequis + retiros + yts + pgYingYang;
          
      var allClasesCentro = pgCentro + pfCentro + pfmCentro;   
      
      var allPg = pgCelaya + pgCentro + pgHacienda + pgJardines + pgSanJuan + pgSanMiguel + pgTequis;
      
      var allPf = pfCentro + pfmCentro;
      
      var allClases = pgCelaya + pgCentro + pgHacienda + pgJardines + pgSanJuan + pgSanMiguel +
      	  pgTequis + pfCentro + pfmCentro + dharmaChavos + dharmaNinos + pgYingYang;
      
      var frameTagStart = '<iframe id="calFrame" src="https://www.google.com/calendar/embed?showTitle=0&amp;showCalendars=0&amp;height=825&amp;wkst=2&amp;hl=es&amp;bgcolor=%23FFFFFF&amp;';
      var frameTagEnd = 'ctz=America%2FMexico_City" style=" border-width:0 " width="1000" height="1000" frameborder="0" scrolling="no"></iframe>';
      
      
      switch (filterName) {

              case 'charlas':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + charlas + frameTagEnd;
              break;
              
              case 'dharmaChavos':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + dharmaChavos + frameTagEnd;
              break;
              
              case 'dharmaNinos':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + dharmaNinos + frameTagEnd;               
              break;
              
              case 'eventos':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + eventos + frameTagEnd;                
              break;

              case 'puyhas':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + puyhas + frameTagEnd;               
              break; 
              
              case 'pfCentro':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pfCentro + frameTagEnd;               
              break; 
              
              case 'pfmCentro':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pfmCentro + frameTagEnd;                
              break; 
              
              case 'pgCelaya':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgCelaya + frameTagEnd;                
              break; 
              
              case 'pgCentro':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgCentro + frameTagEnd;
              break; 
              
              case 'pgYingYang':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgYingYang + frameTagEnd;
              break; 
               
              case 'pgHacienda':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgHacienda + frameTagEnd;                
              break; 
               
              case 'pgJardines':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgJardines + frameTagEnd;                
              break; 
               
              case 'pgSanJuan':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgSanJuan + frameTagEnd;
              break; 
               
              case 'pgSanMiguel':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgSanMiguel + frameTagEnd;               
              break; 
               
              case 'pgTequis':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + pgTequis + frameTagEnd;              
              break; 

              case 'retiros':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + retiros + frameTagEnd;              
              break; 
 
 
              case 'yts':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + yts + frameTagEnd;              
              break; 
 
              
              case 'allPg':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + allPg + frameTagEnd;             
              break;

              
              case 'allPf':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + allPf + frameTagEnd;              
              break;
              
              case 'allClases':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + allClases + frameTagEnd;               
              break;
              
              case 'allClasesCentro':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + allClasesCentro + frameTagEnd;               
              break;
              
     
              case 'all':
                container.innerHTML = '';
                container.innerHTML = frameTagStart + allCals + frameTagEnd;              
              break;
              
              default:
                
      }
 
}