function checkForm() {
	var nameField = document.getElementById('name');
	var emailField = document.getElementById('email');
	var enquiryField = document.getElementById('enquiry');
	
	if(nameField.value == "") {
		alert("You must enter your name.");
		return false;
	}
	
	if(emailField.value == "") {
		alert("You must enter an email address.");
		return false;
	}
	
	if(enquiryField.value == "") {
		alert("You must enter an enquiry.");
		return false;
	}			
}