function top_menu_show(menu)
{
  if (document.all['t_menu'+menu].style.visibility == 'hidden') document.all['t_menu'+menu].style.visibility = 'visible';
}

function top_menu_hide(menu)
{
  document.all['t_menu'+menu].style.visibility = 'hidden';
}

function trim(str) {
  return str.replace(/^\s+/, '').replace(/\s+$/, '');
}

function submitform() {
  if  (trim(document.online.name.value)=='' || trim(document.online.phone.value)=='' || trim(document.online.email.value)=='' || trim(document.online.translation_language.value)=='' || trim(document.online.translation_language.value)=='') {
    alert("Должны быть введены все данные");
  } else {
    document.online.submit();
  }
}