var dyn_carsOptionTree = [['3',[['Brera','1174']]],['7',[['A3','42'],['A6','45'],['A8','47']]],['9',[['Arnage','74']]],['10',[['116','1010'],['120','1012'],['318','942'],['320','948'],['325','1109'],['328','999'],['520','937'],['525','1103'],['645 ci','1370'],['X5','98']]],['16',[['C1','906']]],['20',[['Super V8','183']]],['26',[['Mondeo','259']]],['34',[['Coupe','302'],['Santa Fe','309']]],['36',[['XJ Series','325']]],['39',[['Magentis','336'],['Sorento','342']]],['44',[['RX','370']]],['53',[['C 180','931'],['E 200','933'],['E 320','935'],['SL 350','1083']]],['57',[['Cooper','475'],['One','477']]],['61',[['Almera','512'],['Note','1091'],['Terrano II','1000']]],['67',[['207','1144'],['307','554']]],['69',[['Cayenne','579']]],['74',[['Silver Seraph','633']]],['76',[['9-3','661'],['9-5','662']]],['80',[['Octavia','682']]],['83',[['Impreza','697'],['Legacy','699']]],['85',[['Grand Vitara','707']]],['88',[['Prius','747']]],['93',[['Passat','817']]],['94',[['S40','846'],['V70','853'],['XC90','856']]]]
function populateTarget(name,triggerObj,targetObj,emptyText) {

  eval ('tree = ' + name + 'OptionTree')

  triggerValue = getValue(triggerObj)

  for (i=0;i<tree.length;i++) {

    if (tree[i][0]==triggerValue) {
      break
    }

  }

  empty(targetObj)

  newOption = new Option()
  newOption.text = emptyText;

  newOption.value = ""
  targetObj.options[targetObj.options.length] = newOption

  if (i<tree.length) {

    options = tree[i][1]
    selectThisOption = 0

    for (i=0;i<options.length;i++) {

      newOption = new Option()
      newOption.text = options[i][0]
      newOption.value = options[i][1]
      targetObj.options[targetObj.options.length] = newOption

    }

    targetObj.options.length = options.length + 1;
  }

}

function empty(select) {

  select.options.length = 0

}

function getValue(formObj) {

  value = null

  if (formObj.options) { // select

    if (formObj.selectedIndex > -1)
      value = formObj.options[formObj.selectedIndex].value

  } else {

    if (formObj.length) { // radio
      for (var b = 0; b < formObj.length; b++)
        if (formObj[b].checked)
          value = formObj[b].value
    }
    else if (formObj.checked) // checkbox
      value = formObj.value

  }

  return value

}