function invalid() {
if (document.form1.search_query.value.length < 3) {
alert("Lütfen en az 3 karekterli bir kelime giriniz!");
return false;
}
return true;
}

function turkishkey(key) {
  var obj = document.forms.form1;

  obj.search_query.value = obj.search_query.value + key;
  obj.search_query.focus();
  return;
}