Accordion concatenate

Accordion concatenate

Hi i used this script
http://jqueryui.com/accordion/

But i have concatenate accordion, it's error

  1. <div id="accordion">
        <h3>ONE</h3>
            <div> <p> TEXT < /p> </div>
           
          <h3>TWO</h3>
              <div>
                   <div id="accordion">
                       <h3>TWO bis</h3>
                       <div>  <p> TEST </p></div>

                       <h3>THREE bis</h3>
                       <div>  <p> TEST </p></div>
                   </div>
    </div>