function validateFirstname() {
  if ( form1.firstname.value== "") {
	   alert("Please enter a firstname.");
	   form1.firstname.focus();
	   return 1;
  }
}

function validateSurname() {
  if ( form1.surname.value== "") {
	   alert("Please enter a surname.");
	   form1.surname.focus();
	   return 1;
  }
}
function validateComments() {
  if ( form1.enquiry.value== "") {
	   alert("Please enter a comment or enquiry.");
	   form1.enquiry.focus();
	   return 1;
  }
}
function validateAntispam() {
  if ( form1.antispam.value== "") {
	   alert("For security and anti-spam purposes, please enter the text in the image below.");
	   form1.antispam.focus();
	   return 1;
  }
}
function validateEmail() {
  if ( form1.email.value== "") {
	   alert("Please enter a valid email address.");
	   form1.email.focus();
	   return 1;
  }
}

function validateForm(form1) {
  if (validateFirstname() || validateSurname() || validateComments() || validateEmail() || validateAntispam() ) {
	return false;
  }
  else {
	return true;
  }
}