RegExp.escape = function(text) {
  if (!arguments.callee.sRE) {
    var specials = [
      '/', '.', '*', '+', '?', '|',
      '(', ')', '[', ']', '{', '}', '\\'
    ];
    arguments.callee.sRE = new RegExp(
      '(\\' + specials.join('|\\') + ')', 'g'
    );
  }
  return text.replace(arguments.callee.sRE, '\\$1');
};

var MyboDynamic = {
  url: function(param) {
      var regex = '[?&]' + RegExp.escape(param) + '=([^&#]*)';
      var results = (new RegExp(regex)).exec(unescape(window.location.href));
      if(results) return results[1];
      return '';
  },
  load: function() {
    if (window.location.pathname == '/page/event/search_results') {
      if (this.url('event_type[]') == '197') {
        jQuery('#page_content td').eq(0).prepend('<img src="http://www.barackobama.com/images/email/last_call_w.jpg" alt="Last Call for Change" width="640" height="98" />')
      }
    }
  }
};

jQuery(document).ready(function() {
  MyboDynamic.load();
});