function checkform ( form )
{

  // ** START **
  if (form.name.value == "") {
    alert( "Please enter your name." );
    form.name.focus();
    return false ;
  }


if (form.email.value == "")
  {
    alert( "Please enter your email address." );
    form.email.focus();
    return false ;
  }

// START confirm valid email address

if ((form.email.value.indexOf ('@',0) == -1 ||
   form.email.value.indexOf ('.',0) == -1) &&
   form.email.value != "")
  {
    alert( "The email address entered doesn’t seem to be valid." );
    form.email.focus();
    return false ;
  }

// END confirm valid email address




  if (form.uword.value == "") {
    alert( "Please enter validation code shown in image." );
    form.uword.focus();
    return false ;
  }






  // ** END **
  return true ;
}