function fondocelda(dato){
document.getElementById(dato).style.backgroundColor='#ffff00';
document.getElementById(dato).style.fontWeight='bold';
switch (dato){
case 'f1c1': 
var izda=document.getElementById(dato).style.left;
var alto = document.getElementById(dato).style.top;
document.getElementById('f1c1ad').style.left=izda;
document.getElementById('f1c1ad').style.top=alto;
document.getElementById('f1c1ad').style.display='block';
break;
case 'f1c2': 
izda = document.getElementById(dato).style.left;
alto = document.getElementById(dato).style.top;
document.getElementById('f1c2ad').style.left=izda;
document.getElementById('f1c2ad').style.top=alto;
document.getElementById('f1c2ad').style.display='block';
break;
case 'f1c3': 

izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f1c3ad').style.left=izda;
document.getElementById('f1c3ad').style.top=alto;
document.getElementById('f1c3ad').style.display='block';
break;
case 'f1c4': 
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f1c4ad').style.left=izda;
document.getElementById('f1c4ad').style.top=alto;
document.getElementById('f1c4ad').style.display='block';
break;
case 'f1c5': 
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f1c5ad').style.left=izda;
document.getElementById('f1c5ad').style.top=alto;
document.getElementById('f1c5ad').style.display='block';
break;
case 'f1c6': 
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f1c6ad').style.left=izda;
document.getElementById('f1c6ad').style.top=alto;
document.getElementById('f1c6ad').style.display='block';
break;
case 'f2c1': 

izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f2c1ad').style.left=izda;
document.getElementById('f2c1ad').style.top=alto;
document.getElementById('f2c1ad').style.display='block';
break;
case 'f2c2': 
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f2c2ad').style.left=izda;
document.getElementById('f2c2ad').style.top=alto;
document.getElementById('f2c2ad').style.display='block';
break;
case 'f2c3': 
document.getElementById('f2c3ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f2c3ad').style.left=izda;
document.getElementById('f2c3ad').style.top=alto;
break;
case 'f2c4': 
document.getElementById('f2c4ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f2c4ad').style.left=izda;
document.getElementById('f2c4ad').style.top=alto;
break;
case 'f2c5': 
document.getElementById('f2c5ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f2c5ad').style.left=izda;
document.getElementById('f2c5ad').style.top=alto;
break;
case 'f2c6': 
document.getElementById('f2c6ad').style.display='block';
izda = document.getElementById(dato).style.left;
alto = document.getElementById(dato).style.top;
document.getElementById('f2c6ad').style.left=izda;
document.getElementById('f2c6ad').style.top=alto;
break;
case 'f3c1': 
document.getElementById('f3c1ad').style.display='block';
izda = document.getElementById(dato).style.left;
alto = document.getElementById(dato).style.top;
document.getElementById('f3c1ad').style.left=izda;
document.getElementById('f3c1ad').style.top=alto;
break;
case 'f3c2': 
document.getElementById('f3c2ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f3c2ad').style.left=izda;
document.getElementById('f3c2ad').style.top=alto;
break;
case 'f3c3': 
document.getElementById('f3c3ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f3c3ad').style.left=izda;
document.getElementById('f3c3ad').style.top=alto;
break;
case 'f3c4': 
document.getElementById('f3c4ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f3c4ad').style.left=izda;
document.getElementById('f3c4ad').style.top=alto;
break;
case 'f3c5': 
document.getElementById('f3c5ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f3c5ad').style.left=izda;
document.getElementById('f3c5ad').style.top=alto;
break;
case 'f3c6': 
document.getElementById('f3c6ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f3c6ad').style.left=izda;
document.getElementById('f3c6ad').style.top=alto;
break;
case 'f4c1': 
document.getElementById('f4c1ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f4c1ad').style.left=izda;
document.getElementById('f4c1ad').style.top=alto;
break;
case 'f4c2': 
document.getElementById('f4c2ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f4c2ad').style.left=izda;
document.getElementById('f4c2ad').style.top=alto;
break;
case 'f4c3': 
document.getElementById('f4c3ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f4c3ad').style.left=izda;
document.getElementById('f4c3ad').style.top=alto;
break;
case 'f4c4': 
document.getElementById('f4c4ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f4c4ad').style.left=izda;
document.getElementById('f4c4ad').style.top=alto;
break;
case 'f4c5': 
document.getElementById('f4c5ad').style.display='block';
izda=document.getElementById(dato).style.left;
alto=document.getElementById(dato).style.top;
document.getElementById('f4c5ad').style.left=izda;
document.getElementById('f4c5ad').style.top=alto;
break;
}
}

function fondocelda2(dato){
document.getElementById(dato).style.backgroundColor='transparent';
document.getElementById(dato).style.fontWeight='normal';
switch (dato){
case 'f1c1': 
document.getElementById('f1c1ad').style.display='none';
break;
case 'f1c2': 
document.getElementById('f1c2ad').style.display='none';
break;
case 'f1c3': 
document.getElementById('f1c3ad').style.display='none';
break;
case 'f1c4': 
document.getElementById('f1c4ad').style.display='none';
break;
case 'f1c5': 
document.getElementById('f1c5ad').style.display='none';
break;
case 'f1c6': 
document.getElementById('f1c6ad').style.display='none';
break;
case 'f2c1': 
document.getElementById('f2c1ad').style.display='none';
break;
case 'f2c2': 
document.getElementById('f2c2ad').style.display='none';
break;
case 'f2c3': 
document.getElementById('f2c3ad').style.display='none';
break;
case 'f2c4': 
document.getElementById('f2c4ad').style.display='none';
break;
case 'f2c5': 
document.getElementById('f2c5ad').style.display='none';
break;
case 'f2c6': 
document.getElementById('f2c6ad').style.display='none';
break;
case 'f3c1': 
document.getElementById('f3c1ad').style.display='none';
break;
case 'f3c2': 
document.getElementById('f3c2ad').style.display='none';
break;
case 'f3c3': 
document.getElementById('f3c3ad').style.display='none';
break;
case 'f3c4': 
document.getElementById('f3c4ad').style.display='none';
break;
case 'f3c5': 
document.getElementById('f3c5ad').style.display='none';
break;
case 'f3c6': 
document.getElementById('f3c6ad').style.display='none';
break;
case 'f4c1': 
document.getElementById('f4c1ad').style.display='none';
break;
case 'f4c2': 
document.getElementById('f4c2ad').style.display='none';
break;
case 'f4c3': 
document.getElementById('f4c3ad').style.display='none';
break;
case 'f4c4': 
document.getElementById('f4c4ad').style.display='none';
break;
case 'f4c5': 
document.getElementById('f4c5ad').style.display='none';
break;
}

}