function checkSubmit() {
	var myForm = document.form_contact;
	if (myForm.sender_name.value.length < 1) {
		alert ("Please provide your name.");
		myForm.sender_name.focus();
		return false;
	}
	if (myForm.sender_email.value.length < 1) {
		alert ("Please provide your e-mail.");
		myForm.sender_email.focus();
		return false;
	}
	if (myForm.sender_enquiry.value.length < 1) {
		alert ("Please enter your comments / enquiries.");
		myForm.sender_enquiry.focus();
		return false;
	}
	if (myForm.security_code.value.length < 1) {
		alert ("Please fill in the security code.");
		myForm.security_code.focus();
		return false;
	}
	else {
		if (confirm("Are you sure you want to submit?")) {
			return true;
		}
		else {
			return false;
		}
	}
} // End function checkSubmit()


// Function to automatically check the email_me checkbox
// when user inputs his email
// Note that e-mail must be more than 6 characters long, eg w@x.yz
// *****************************************************************
function checkEmailLength() {
	var myForm = document.form_contact;
	if (myForm.sender_email.value.length > 5) {
		myForm.email_me.checked = true;
		myForm.email_me.disabled = false;
	}
	else {
		myForm.email_me.checked = false;
		myForm.email_me.disabled = true;
	}
} // End function checkEmailLength()