$(document).ready(function(){ 

  var land_field = $('div.tim');
  land_field.hide();
  var  radio_buttons = $("div.rad input")
  if ($('#want_land input:checked').val() == 1 || $('#own_land input:checked').val() == 1) {
        if ($('#want_land input:checked').val() == 1 && $('#own_land input:checked').val() == 1) {
          land_field.hide();
        }
        else if ($('#want_land input:checked').val() == 1 && $('#own_land input:checked').val() == 0) {
          $('div.tim label').html('Land area required')
          land_field.show();
        }
        else if ($('#want_land input:checked').val() == 0 && $('#own_land input:checked').val() == 1) {
          $('div.tim label').html('Land area owned')  
          land_field.show();
        }
      }
      else{
        land_field.hide(); 
      }
  radio_buttons.change(function() {
      if ($('#want_land input:checked').val() == 1 || $('#own_land input:checked').val() == 1) {
        if ($('#want_land input:checked').val() == 1 && $('#own_land input:checked').val() == 1) {
          land_field.hide();
        }
        else if ($('#want_land input:checked').val() == 1 && $('#own_land input:checked').val() == 0) {
          $('div.tim label').html('Land area required')
          land_field.show();
        }
        else if ($('#want_land input:checked').val() == 0 && $('#own_land input:checked').val() == 1) {
          $('div.tim label').html('Land area owned')  
          land_field.show();
        }
      }
      else{
        land_field.hide(); 
      }
  })
});