function disable_checkbox(mycheckbox) {
  cb = document.photointmp.elements[mycheckbox]
  if(cb.disabled)
    cb.disabled = false;
  else
    cb.disabled = true;
}

function switch_checkbox(del, move) {
  del = document.photointmp.elements[del];
  move = document.photointmp.elements[move];
  if(move.checked) {
    move.checked = false;
    del.disabled = false;
    del.checked = false;
  } else {
    del.checked = false;
    del.disabled = true;
    move.disabled = false;
    move.checked = true;
  }
}

function change_on_click(mycheckbox) {
  cb = document.display_photo.elements[mycheckbox];
  if(cb.checked)
    cb.checked = false;
  else
    cb.checked = true;
}

function popup_big(url, name) {
  newwin = window.open(url, name, 'width=580, height=600, scrollbars=1,resizable=1');
}

function popup_txt(url, name) {
  newwin = window.open(url, name, 'width=580, height=600, scrollbars=1,resizable=1');
}

function toggle_detail_photo() {
  status = document.detail_photo.toggle_checkbox.checked;
  els = document.detail_photo.elements.length;
  for(i = 1; i < els; i++) {
    document.detail_photo.elements[i].checked = status;
  }
}