function InitSaveVariables_names(form) { 
  b_title     = form.b_title.value; 
  b_firstname = form.b_firstname.value; 
  b_lastname  = form.b_lastname.value; 
} 

function copynames(form){ 
  if (form.copyn.checked){ 
    InitSaveVariables_names(form); 
    form.b_title.value     = form.title.value; 
    form.b_firstname.value = form.firstname.value; 
    form.b_lastname.value  = form.lastname.value; 
  } else { 
    form.b_title.value     = b_title; 
    form.b_firstname.value = b_firstname; 
    form.b_lastname.value  = b_lastname; 
  } 
}