avatar selection js comply with drupal behavior

I hope this can be included in the next release.

The purpose of the changes is to make the js in compliance with drupal behavior thus if this module is called via ajax and the caller invoke drupal attach behavior then the js will not broken.

/* $Id: avatar_selection.js,v 1.1.2.1.4.14 2009/06/07 23:34:23 snpower Exp $ */
Drupal.behaviors.AvatarSelection = function(context) {
function radio_button_handler() {
  // handle radio buttons
  $('div.user-avatar-select input.form-radio').hide();
  $('div.user-avatar-select img').hover(
    function(){
      $(this).addClass("avatar-hover");
    },
    function(){
      $(this).removeClass("avatar-hover");
    }
  );
}

function image_click_handler() {
  $('div.user-avatar-select img').bind("click", function(){
    $("div.user-avatar-select img.avatar-select").each(function(){
      $(this).removeClass("avatar-select");
      $(this).parent().children("input").attr("checked", "");
    });
    $(this).addClass("avatar-select");
    $(this).parent().children("input").attr("checked", "checked");
  });
}

if (Drupal.jsEnabled) {
      // handle radio buttons
    radio_button_handler();

    // handle image selection
    image_click_handler();
}

};