function openServices( ) {
   document.getElementById('services').style.visibility = "visible";
}
function closeServices( ) {
   document.getElementById('services').style.visibility = "hidden";
}
function openMarkets( ) {
   document.getElementById('markets').style.visibility = "visible";
}
function closeMarkets( ) {
   document.getElementById('markets').style.visibility = "hidden";
}

function ValidateSendForm( form ) {

  if( !form.formFname.value ) {
    alert('Please fill First Name field');
    form.formFname.focus();
    return false;
  }
  if( !form.formSurname.value ) {
    alert('Please fill Surname field');
    form.formSurname.focus();
    return false;
  }
  if( !form.formEmail.value ) {
    alert('Please fill Email field');
    form.formEmail.focus();
    return false;
  }

  /// Email validation
  if( !validate ( form, 'formEmail', "[a-zA-Z0-9\-_.]+@[a-zA-Z0-9\-_.]+", 'Please enter a correct Email address' ) ) return false;


  form.submit();
}
function validate( frm, fld, reg, msg )  {
    eval( 'field=frm.' + fld );
    field_value=field.value;
    if(field_value.match(reg)!=field_value) {
      alert ( msg );
      field.focus();
      return false;
    };
    return true;
  };