function check_address() 
	{
		if  (document.form1.firstname.value == ""){ alert("Please enter your First Name"); document.form1.firstname.focus(); return false; }
		if  (document.form1.surname.value == ""){ alert("Please enter your Surname"); document.form1.surname.focus(); return false; }
		if  (document.form1.email.value == ""){ alert("Please enter your email address"); document.form1.email.focus(); return false; }
		if  (document.form1.comment.value == ""){ alert("Please complete your enquiry"); document.form1.enquiry.focus(); return false; }
	}