var $j = jQuery.noConflict();
$j(function() {  
  $j(".radio_label").click(function(){
    var rvalue = $j(this).prev('input').attr('id');
    if(rvalue == 'radio1') {
      $j('label[for=radio2]').css('background-image','url(./images/select_default.jpg)');
      $j('label[for=radio1]').css('background-image','url(./images/select_selected.jpg)');
    }
    if(rvalue == 'radio2') {
      $j('label[for=radio1]').css('background-image','url(./images/select_default.jpg)');
      $j('label[for=radio2]').css('background-image','url(./images/select_selected.jpg)');
    }
  });  
});