jj

$(document).ready(function() {
  $("#edit-folks-list").change(function() {
    var targetLangIndex = $(this).find(":selected").text();
    var chunks = targetLangIndex.split("_");
    var idChunk = chunks[1];

      $.getJSON('/drupalTheme/translate/webDelegate.php?name='+idChunk, function(data) {
          $.each(data, function(key, value) {
         $('#edit-targetLang-list').remove().append($('<option>', { key : value }).text(value));});

      $.each(data, function(key, value) {
         $('#edit-targetLang-list').append($('<option>', { key : value }).text(value));});
    });
  });
});