function enable_text_input(field, prime, init) {
  var x = eval('document.ss_form.' + field);
  var input_disabled = x.disabled;
  x.disabled = false;
  
  if (init != 'edit') {
    if (prime) {
      x.value = prime;
    } else if (input_disabled == true) {
      x.value = '';
    }
  }
}
function disable_text_input(field) {
  var x = eval('document.ss_form.' + field);
  x.value = 'N/A';
  x.disabled=true;
}
function enable_checkbox_input(field, prime, init) {
  var x = eval('document.ss_form.' + field);
  var input_disabled = x.disabled;
  x.disabled=false;
  
  if (init != 'edit') {
    if (init == 'add') {
      if (prime) {
        x.checked=true;
      }
    }
    if (input_disabled == true) {
      if (prime) {
        x.checked=true;
      } else {
        x.checked=false;
      }
    }
  }
}
function disable_checkbox_input(field) {
  var x = eval('document.ss_form.' + field);
  x.checked=false;
  x.disabled=true;
}
function enable_select_input(field, prime, init) {
  var x = eval('document.ss_form.' + field);
  var input_disabled = x.disabled;
  x.disabled=false;

  if (init != 'edit') {
    if (prime) {
      x.selectedIndex = prime;
    } else if (input_disabled == true) {
      x.selectedIndex = '';
    }
  }
}
function disable_select_input(field) {
  var x = eval('document.ss_form.' + field);
  x.selectedIndex = '';
  x.disabled=true;
}