<li class='race'>
  <div class='row'>
    <span class='check_box'><input id="race2" name="race2" type="checkbox" value="1" /></span>
  </div>
</li>



$j(function(){
  $j(".race .row").hover(
    function(){$j(this).addClass("hover");},
    function(){$j(this).removeClass("hover");}
  ).click(function(){
    $j(this).children('.check_box input')..... ??
  });
});