Radio, Checkbox 클릭 여부에 따라 input text , textarea 등 disabled 시키기.

<script type="text/javascript">
     function radiotext( formident )
     {
      var formname = formident;
      var text1 = document.getElementsByName('wr_35');
      var text2 = document.getElementsByName('wr_36');

      var rb = document.getElementsByName('wr_33');
      text1[0].disabled = text2[0].disabled  = ( rb[0].checked == true ) ? 'disabled' : '';

      if ( text1[0].disabled )
       text1[0].value = '';

      if ( text2[0].disabled )
       text2[0].value = '';
      
     }
      </script>

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이렇게 하자.