Dart wallpaper JS code

dart-wallpaper.js

jQuery(document).ready(function($) {
  var _abm_bg_config = _abm_bg || {};

  _abm_bg_config.bg_url = 'url(http://heartprintseducation.files.wordpress.com/2012/06/new-background-test.jpg)';
  _abm_bg_config.click_url = '%chttp://www.google.com';

  var _abm_bg = document.createElement('div');
  var _abm_bg_link = document.createElement('a'); _abm_bg_link.href = _abm_bg_config.click_url; _abm_bg_link.target = "_blank";
  var _abm_bg_link_node = document.createElement('p'); _abm_bg_link_node.textContent = 'testing'; _abm_bg_link.insertBefore(_abm_bg_link_node);
  var offset = $('#columns').offset();
  _abm_bg_link_node.style.display = 'none';
  _abm_bg_link.style.width = '100%';
  _abm_bg_link.style.height = '100%';
  _abm_bg_link.style.position = 'absolute';
  _abm_bg_link.style.top = offset.top + 'px';
  _abm_bg_link.style.backgroundColor = 'transparent';
  _abm_bg.insertBefore(_abm_bg_link);
  var d = document.getElementsByTagName('div')[0]; d.parentNode.insertBefore(_abm_bg, d);
  document.body.style.position = 'relative';
  document.body.style.backgroundImage = _abm_bg_config.bg_url;
  document.body.style.backgroundRepeat = 'no-repeat';
  document.body.style.backgroundPosition = 'center ' + offset.top + 'px';
  document.body.style.backgroundAttachment = 'fixed';
});