troubles selecting options in dropdown to hide using :not selector

troubles selecting options in dropdown to hide using :not selector

I am trying to use the "not" selector to hide certain options in a dropdown box.  Evidently I'm not getting it.  Can someone please tell me what my misunderstanding is here.  I would very much appreciate the help as I'm kind of stuck.  I'm trying not to have to use the .each with arrays here because that gets complicated for me.  thanks  -dave



<script>
$(document).ready(function(){

    //$("option:contains('CommitteeAction')").not().hide();

    // $("option:not(option:not('CommitteeAction')").hide() //even tried the double negative!
     $("option:not(option:contains('CommitteeAction')").hide() //give me the opposite of what i'd like

});
</script>

    The dropdown html:

                    <td valign="top" nowrap="" class="ms-formlabel">Content Type</td>
  <td valign="top" class="ms-formbody"><select name="ctl00$m$g_4e27d02a_5beb_43bf_83d1_69d38c617ece$ctl00$ctl03$ctl00$ContentTypeChoice" title="Content Type" onchange="javascript:ChangeContentType(&quot;ctl00_m_g_4e27d02a_5beb_43bf_83d1_69d38c617ece_ctl00_ctl03_ctl00_ContentTypeChoice&quot;);return false;" id="ctl00_m_g_4e27d02a_5beb_43bf_83d1_69d38c617ece_ctl00_ctl03_ctl00_ContentTypeChoice"> 
                          <option value="0x0120D5200022E7569C62963E469B62F73D4190A3B01B010085E2D9F7BC4678479F8C09308CF861A6">IRBCommitteeActionForm</option> 
                          <option value="0x0120D5200022E7569C62963E469B62F73D4190A3B01B02001D86B7BFD8A63440A50FF1276ECC3BCC">IACUCCommitteeAction</option> 
                          <option value="0x0120D5200022E7569C62963E469B62F73D4190A3B01B0300A1B16816E11DD445AAD8C5A8170177AC">SafetyCommitteeAction</option> 
                          <option value="0x0120D5200022E7569C62963E469B62F73D4190A3B01B0400B27BB6262B4F5446BB5BD60105D7BD5F" selected="">RDCommitteeAction</option> 
                          <option value="0x0120D5200022E7569C62963E469B62F73D4190A3B003010040C514B859A5C647B73BA776CFB44A2C">IRB 
                          Initial Database Submission PHX</option> <option value="0x0120D5200022E7569C62963E469B62F73D4190A3B01902000EE375B5FE82624A8607ADAB453AA00B">IRB 
                          Initial Submission Boston</option> <option value="0x0120007192F2387B51CF4DAB8EE0C304C1FABC">Folder</option></select><br></td></tr>