// JavaScript Document

function validate(formName) {

	var email_address_pattern = /^.+@.+\..+$/;

	if (formName.firstname.value == "") {
		alert("Please enter your first name.");
		formName.firstname.focus();
		return false;
	}

	if (formName.lastname.value == "") {
		alert("Please enter your last name.");
		formName.lastname.focus();
		return false;
	}

	if (formName.phone.value == "") {
		alert("Please enter your phone number.");
		formName.phone.focus();
		return false;
	}
	
	if (formName.comments.value == "") {
		alert("Please enter a comment or question.");
		formName.comments.focus();
		return false;
	}

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

	if (formName.email.value.search(email_address_pattern) == -1) {
		alert("Please enter your email address in the correct format.");
		formName.email.focus();
		return false;
	}

}