"initializeColumns();">
      <form action="#" id="form"> Show: <input type="checkbox" checked value="0" id="checkFieldName" onclick="toggleCol('tableID', 0, null);">Field name<input type="checkbox" checked value="1" id="checkID" onclick="toggleCol('tableID', 1, null);">Element/attribute name<input type="checkbox" checked value="2" id="checkRequirement" onclick="toggleCol('tableID', 2, null);">Requirement<input type="checkbox" checked value="3" id="checkOccurrences" onclick="toggleCol('tableID', 3, null);">