function fmuestra(n){

	foto1.style.visibility="hidden";
	foto2.style.visibility="hidden";
	foto3.style.visibility="hidden";
	foto4.style.visibility="hidden";
	foto5.style.visibility="hidden";
	foto6.style.visibility="hidden";
	foto7.style.visibility="hidden";
	foto8.style.visibility="hidden";
	foto9.style.visibility="hidden";
	foto10.style.visibility="hidden";
	foto11.style.visibility="hidden";
	foto12.style.visibility="hidden";
	foto13.style.visibility="hidden";
	foto14.style.visibility="hidden";
	

	switch(n)
{
case 1:
foto1.style.visibility="visible";
break
case 2:
foto2.style.visibility="visible";
break
case 3:
foto3.style.visibility="visible";
break
case 4:
foto4.style.visibility="visible";
break
case 5:
foto5.style.visibility="visible";
break
case 6:
foto6.style.visibility="visible";
break
case 7:
foto7.style.visibility="visible";
break
case 8:
foto8.style.visibility="visible";
break
case 9:
foto9.style.visibility="visible";
break
case 10:
foto10.style.visibility="visible";
break
case 11:
foto11.style.visibility="visible";
break
case 12:
foto12.style.visibility="visible";
break
case 13:
foto13.style.visibility="visible";
break
case 14:
foto14.style.visibility="visible";
break
}
}