function setClassName(objID, className) {
				 document.getElementById(objID).className = className;
}

function check_click(objID, checkbox) {
				 if (checkbox.checked) {
				        document.getElementById(objID).disabled = false;
								document.getElementById(objID).focus();
				 } else {
				        document.getElementById(objID).disabled = true;
				 }			
}
 
 
function checkform(form) {
				 if ((form.email.value == "") && (form.phone.value == "") && (form.town.value == "")) {
				 				 alert('Please tell us how we can contact you.');
								 return false;
				 } 
				 return true;
}