var datos = new Array('COMPANY','PERSON OF CONTACT','ACTIVITY OF THE COMPANY','ADDRESS','CITY','PROVINCE/STATE','POST CODE','COUNTRY','TELEPHONE NUMBER','EMAIL ADDRESS','TYPE OF MEETING/ACTIVITY','NUMBER OF PERSONS APROX.','ESTIMATED DURATION','OTHER SERVICES REQUIRED');

function vacio(t) {
  for (c=0; c<t.length; c++) {
    if (t.charAt(c)!=" ") {
      return false;
    }
  }
  return true;
}

function esta(t)
{
  for (j=0; j<datos.length; j++)
    if (t==datos[j]) return true;
  return false;
}

function validar(f)
{
  correcto=true;

  for (i=0; ((i<f.length) && (correcto)); i++)
    if (esta(f.elements[i].name))
      if (vacio(f.elements[i].value)) correcto = false;
  if (!correcto)
    alert("Please, check that all the compulsory details have been given correctly");
  else
    f.submit();
}