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 address.");
		myForm.sender_email.focus();
		return false;
		}
	if (myForm.sender_enquiry.value.length < 1)
		{
		alert ("Please enter your enquiries.");
		myForm.sender_enquiry.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()