enque script not working

hi, i copied wp_enqueque_script bt when i see my page soruce code, it doesn’t tell the url of google cdn to see if it is loaded..can anyone help me. am i missing something

function my_scripts_method() {
  wp_deregister_script( 'jquery' );
  wp_register_script( 'jquery',    'http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js');
  wp_enqueue_script( 'jquery' );
}    

add_action('wp_enqueue_scripts', 'my_scripts_method');