マウスクリックのテキスト効果を実装するjQueryコード

<script type="text/javascript">
/* 鼠标特效 */
var a_idx = 0;
jQuery(document).ready(function($) {
  $("body").click(function(e) {
    var a = new Array("富强", "民主", "文明", "和谐", "自由", "平等", "公正" ,"法治", "爱国", "敬业", "诚信", "友善");
    var $i = $("<span/>").text(a[a_idx]);
    a_idx = (a_idx + 1) % a.length;
    var x = e.pageX,
    y = e.pageY;
    $i.css({
      "z-index": 999999999999999999999999999999999999999999999999999999999999999999999,
      "top": y - 20,
      "left": x,
      "position": "absolute",
      "font-weight": "bold",
      "color": "#ff6651"
    });
    $("body").append($i);
    $i.animate({
      "top": y - 180,
      "opacity": 0
    },
    1500,
    function() {
      $i.remove();
    });
  });
});
</script>