function validate() { 
		if  ( document.mailingListForm.First_Name.value == 'Your first name') {
			document.getElementById("valFirstname").style.display = 'block';
			document.getElementById("valTelephone").style.display = 'none';
			document.getElementById("valSurname").style.display = 'none';
			document.getElementById("valEmail").style.display = 'none';
			document.mailingListForm.First_Name.focus();
			
		} else if ( document.mailingListForm.Surname.value == 'Your surname'){
			document.getElementById("valSurname").style.display = 'block';
			document.getElementById("valFirstname").style.display = 'none';
			document.getElementById("valTelephone").style.display = 'none';
			document.getElementById("valEmail").style.display = 'none';
			document.mailingListForm.Surname.focus();
			
		} else if ( document.mailingListForm.Phone.value.length != 11){
			document.getElementById("valTelephone").style.display = 'block';
			document.getElementById("valSurname").style.display = 'none';
			document.getElementById("valEmail").style.display = 'none';
			document.getElementById("valFirstname").style.display = 'none';
			document.mailingListForm.Phone.focus();
			
		} else if ( document.mailingListForm._fromaddr.value.indexOf('@') == -1 ||document.mailingListForm._fromaddr.value.indexOf('.') == -1) {
			document.getElementById("valEmail").style.display = 'block';
			document.getElementById("valTelephone").style.display = 'none';
			document.getElementById("valFirstname").style.display = 'none';
			document.getElementById("valSurname").style.display = 'none';
			document.mailingListForm._fromaddr.focus();
			
		} else {			
			document.mailingListForm.submit();			
		}
	}