// validate at least 1 number provided
   function ff_confirmnext_action(element, action)
   {

//define element input values
    var day = ff_getElementByName('phday').value;
    var nit = ff_getElementByName('phnite').value;
    var cel = ff_getElementByName('phcell').value;
    var fax = ff_getElementByName('phfax').value;
    var sub = 0 //sub total

//calculates if inputs have a value then add to sub total
    if (day != '') sub += parseInt(day);
    if (nit != '') sub += parseInt(nit);
    if (cel != '') sub += parseInt(cel);
    if (fax != '') sub += parseInt(fax);

// check to make sure sub has a value of more than 0
   if (sub != 0) {
      ff_validate_nextpage();
      } else {
      alert ('Oops, it looks like you forgot to enter a phone number.');
      }//if
    } // ff_confirmnext_action