function validate(form) 
{  
  var passed = true;
  var message = "";
        
        if (form.attendees.value == "") {
                message = "Please enter an attendee name.";
                passed = false;
        }
                
        if (!passed) {
                        alert(message);
                        form.action = "";
        }
        else
                        form.action = "https://advdev.usmd.edu/onlineEvent/credit_card.cfm";
         
  return passed;
}