title: jQuery (document).ready(function($)
body: <p>I wrote a jQuery script (below) and I used the (document).ready(function($)) function
  does it slow down the website, and if it does than can you please show me a way to create such functions without slowing down the site?
  Thank you very much!</p>
  
  <pre><code>&lt;script&gt;
  jQuery(document).ready(function($){ 
      $('#columns').wrapInner('&lt;div id="columnsInner" /&gt;');
      $("div.productInfo:first").wrap("&lt;div id='productDetails' /&gt;"); 
  });
  &lt;/script&gt;
  </code></pre>