function checkBoxes (form, nameid, newname) {
  values='';
  for (var c = 0; c < form.elements.length; c++)
    if (form.elements[c].type == 'checkbox' && form.elements[c].name == nameid && form.elements[c].checked)
      values+=form.elements[c].value + ',';
  newname.value=values;
}

function makeSearch(form){
  checkBoxes (form,'tid',document.detailsearch2.tids);
  checkBoxes (form,'rid',document.detailsearch2.rids);
  document.detailsearch2.submit();
}