function check_form()
{
	var ret_val;
	var error_msg;

		ret_val = true;
		error_msg = '';
			
			if (document.contact_form.Full_Name.value == '')
			{
				error_msg += "Please enter your full name.\n";
				ret_val = false;
			}

			if (document.contact_form.Email_Address.value == '')
			{
				error_msg += "Please enter your email address.\n";
				ret_val = false;
			}
			
			if (document.contact_form.Telephone.value == '')
			{
				error_msg += "Please enter a Telephone Number where we can reach you.\n";
				ret_val = false;
			}

			if (ret_val == false)
			{
				alert (error_msg);
			}
			
			return ret_val;
		}
		
		function submit_form()
		{
			if (check_form())
			{
				document.contact_form.submit();	
			}
		}
		
		function clear_form()
		{
			document.contact_form.reset();	
		}