function isValidForm(n) {
	var form=document.thisForm, msg="", status=true;	

	if (n == 1) {
		if (form.FirstName.value == "") { msg += "\nEmpty First Name"; form.FirstName.focus(); status=false; }
		if (form.Surname.value == "") { msg += "\nEmpty Surname"; form.Surname.focus(); status=false; }
		if (form.Address.value == "") { msg += "\nNo Address Specified"; form.Address.focus(); status=false; }
		if (form.Postcode.value == "") { msg += "\nEmpty Post Code"; form.Postcode.focus(); status=false; }
		if (form.EveTel.value == "") { msg += "\nNo Evening Phone Number"; form.EveTel.focus(); status=false; }
	}
	
	if (status) {
		return true;
	} else {
		if (msg != "") alert ("Please correct the following before you continue: \n" + msg);
		return false;
	}
}

function processForm(n) {
	var valid = isValidForm(n);
	if (valid)
		document.thisForm.submit();
}