var dyn_carsOptionTree = [['6',[['DB9','1140']]],['7',[['A4','43'],['A6','45'],['Q5','1419'],['R8','1282']]],['10',[['3 Series','86'],['5 Series','87'],['6 Series','88'],['i3','2374']]],['26',[['Mondeo','259'],['S-Max','1189']]],['36',[['XF','1390']]],['39',[['Carens','334'],['Sorento','342'],['Sportage','343']]],['43',[['Discovery','361'],['Range Rover Sport','1290']]],['44',[['RX','370']]],['49',[['Ghibli','398'],['Gran Turismo','1196'],['Quattroporte','400']]],['51',[['Mazda6','410']]],['53',[['C Class','444'],['E Class','448'],['SLK Class','455']]],['58',[['Outlander','892']]],['61',[['Qashqai','1145']]],['67',[['RCZ','2161']]],['72',[['Master','1104']]],['88',[['Landcruiser','738']]],['93',[['Caddy','964'],['Passat','817'],['Polo','819']]]]
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

}