anchor.diff:    <div class="panel">
       <span class="choose_title"><%=name.capitalize-%>?</span>
       <% FileSet.new(name).choices.each_with_index do |choice,index| -%>
  -      <div onclick='selection("<%=name-%>", "<%=index-%>");'>
  +      <div onclick='start_selection("<%=name-%>", "<%=index-%>");'>
           <input id="<%=name-%>_<%=index-%>" 
                  type="radio" 
                  name="filesets[<%=name-%>]" 
  
positive.code:        !selected('avatar')
      || !selected('filesets[kata]')
      || !selected('filesets[language]');
    
    // Internet Explorer does not appear to be working with the
    // td onclick events. This means the start button is never
    // enabled. Work around this by enabling start for IE.
    
    if (navigator.appName == 'Microsoft Internet Explorer')
    {
      $('start_button').disabled = false;
    }
  }
  
  document.observe('dom:loaded', function() 
  
negative.code: <script language="JavaScript"
          type="text/javascript"><!--
  
  function start_selection(name, index)
  {
    $(name + '_' + index).checked = true; 
    enable_start_if_all_selected();
  