function checkForm(form) {
	if (form.first_name.value == '') {
		alert('You must provide a First Name');
		form.first_name.focus();
		return false;
	}
	if (form.last_name.value == '') {
		alert('You must provide a Last Name');
		form.last_name.focus();
		return false;
	}
	if (form.email.value == '') {
		alert('You must provide an Email Address');
		form.email.focus();
		return false;
	}
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,6})+$/.test(form.email.value)) {
		null;
	}
	else {
		alert('Please enter a valid Email Address.');
		form.email.focus();
		return false ;
	}
}