I need help getting a Grease Monkey with JQuery Script to run on a broken site.

I'm trying to get the following GM script to run, but the page I want it to work on has a JS error and my JS does not get executed.

// ==UserScript==
// @name          BILL INFO PAGE ALTER
// @namespace     http://jenkinslaw.org
// @description   Alter the web page in order to pretty print
// @include       http://www.legis.state.pa.us/cfdocs/billinfo/bill_history.cfm?*
// @require       http://code.jquery.com/jquery-1.4.2.min.js

// ==/UserScript==
*/
(function() {

  //Make a copy of the bill table
  var bill_table = $('.main_table').clone();

  //empty the whole lot
  $(body).empty();

  //append the bill back to the dom.
  $(body).append(bill_table);

}());

Thanks!

D