Please confirm DOM in FireBug. FireBugなどでご確認ください

<script src="http://jsgt.org/lib/jquery/1.2.6/jquery-1.2.6.js" 
        type="text/javascript"></script>

<div>About noConflict</div>

<script type="text/javascript">

  $clone1=jQuery.noConflict();

  $clone2=jQuery.noConflict();

  //$clone1
  $clone1("div").css("color","gold");

  //$clone2
  $clone2("div").css("font-size","20px");

</script>