function cpf()
{
   var pf = document.getElementById("pf");
   var nf = document.getElementById("nf");
   var uf = document.getElementById("uf");
   nf.value = ((pf.value / 1000) + '  nF');
   uf.value = (pf.value / 1000000 + '  µF');
   
}
function cnf()
{
   var pf = document.getElementById("pf");
   var nf = document.getElementById("nf");
   var uf = document.getElementById("uf");
   pf.value = (nf.value * 1000 + '  pF');
   uf.value = (nf.value / 1000 + '  µF');
}
function cuf()
{
   var pf = document.getElementById("pf");
   var nf = document.getElementById("nf");
   var uf = document.getElementById("uf");
   pf.value = (uf.value * 1000000 + '  pF');
   nf.value = (uf.value * 1000 + '  nF');
}