var dyn_carsOptionTree = [['7',[['A6','45']]],['10',[['116','1010'],['520','937'],['X5','98']]],['16',[['C4','909']]],['25',[['Grande Punto','1119']]],['26',[['Fusion','254']]],['32',[['FR-V','1116']]],['34',[['Santa Fe','309']]],['43',[['Freelander','362']]],['44',[['IS 250','1023']]],['53',[['A 150','1033'],['E 320','935']]],['57',[['One','477']]],['61',[['Primera','525'],['Qashqai','1145']]],['63',[['Astra','868'],['Insignia','1405']]],['67',[['407','977']]],['72',[['Laguna','618'],['Megane','619']]],['78',[['Altea','1099']]],['80',[['Octavia','682']]],['82',[['Rexton','693']]],['88',[['MR2','741'],['Rav4','748']]],['94',[['S40','846'],['S80','849'],['V40','852']]]]
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

}