Unexpected call to method or property access

Unexpected call to method or property access

I have created some dynamic divs in my application.
Now when i try to hide , show or  add html to these divs i am getting Unexpected call to method or property access.
 
my jquey is as follows:
 
$(document).on('click', '.expand', function() {
 var theURL = "#URL(Action('ViewPage-GetUsersAssignedToOrg'))#";
 var username = document.MBSearch.UserNameCheck.value;
 var documentname=document.MBSearch.DocumentNameCheck.value;
 var orgid = this.name;
 orgid = orgid.replace(/^\s+|\s+$/g,'');
 username=username.replace(/^\s+|\s+$/g,'');
 var str = "#";
 str=str.concat(this.name);
 str=str.concat("close");
 $(this).css({display: "none"});
 $(str).css({display: "block"});
 var usernames = "#";
 usernames = usernames.concat(this.name);
 $(usernames).css({display: "block"});
 //$(usernames).html('result');
 $.post(theURL,
    {
      orgId:orgid,
      userName:username
    }
 ,function(result)
 {
  $(usernames).html(result);
 })
 });
























 
template code is as follows:
 
<table width="538" border="0" cellpadding="0" cellspacing="0">
          <tr class="theme">
           <td></td>
          <td></td>
           <td></td>
          <td></td>
           <td></td>
          <td></td>
           <td></td>
          <td></td>
          </tr>
    
          <tr class="theme">
       <td width="5"></td>
       <th width="10" align="middle" valign="top"></th>
       <th width="150" align="left" valign="top"><font color="#ffffff">&raquo;</font>
    <isif condition="#(sortDirection EQ 'ASC') AND (sortCol EQ 'BUSINESSPARTNERNO')#">
                    <a href="#URL(Action('ViewPage-SearchAndFavOrgs'),Parameter('CacheID',CacheID),
                    Parameter('RegionsFilter', 'OrgAdmin'),
                    Parameter('SearchName', SearchName),
                    Parameter('DocumentName', DocumentName),
      Parameter('OrgName', OrgName),
     Parameter('UserName', UserName),
     Parameter('scroller', scroller),
     Parameter('suppressemptycatalogorgs', suppressemptycatalogorgs),
     Parameter('PageValue', PageValue),
                    Parameter('sortDirection', 'DESC'),
                    Parameter('sortCol', 'BUSINESSPARTNERNO'))#">
    <iselse>
     <a href="#URL(Action('ViewPage-SearchAndFavOrgs'),Parameter('CacheID',CacheID),
                    Parameter('RegionsFilter', 'OrgAdmin'),
                    Parameter('SearchName', SearchName),
                    Parameter('DocumentName', DocumentName),
      Parameter('OrgName', OrgName),
     Parameter('UserName', UserName),
     Parameter('scroller', scroller),
     Parameter('suppressemptycatalogorgs', suppressemptycatalogorgs),
     Parameter('PageValue', PageValue),
                    Parameter('sortDirection', 'ASC'),
                    Parameter('sortCol', 'BUSINESSPARTNERNO'))#">
    </isif><font color="#ffffff">Organization ID</font></a>
       </th>
       <th width="10" align="middle" valign="top"></th>
       <th width="150" align="middle" valign="top"><font color="#ffffff">&raquo;</font>
    <isif condition="#(sortDirection EQ 'ASC') AND (sortCol EQ 'ORGANIZATIONNAME')#">
                    <a href="#URL(Action('ViewPage-SearchAndFavOrgs'),Parameter('CacheID',CacheID),
                    Parameter('RegionsFilter', 'OrgAdmin'),
                    Parameter('SearchName', SearchName),
                    Parameter('DocumentName', DocumentName),
      Parameter('OrgName', OrgName),
     Parameter('UserName', UserName),
     Parameter('scroller', scroller),
     Parameter('suppressemptycatalogorgs', suppressemptycatalogorgs),
     Parameter('PageValue', PageValue),
                    Parameter('sortDirection', 'DESC'),
                    Parameter('sortCol', 'ORGANIZATIONNAME'))#">
    <iselse>
     <a href="#URL(Action('ViewPage-SearchAndFavOrgs'),Parameter('CacheID',CacheID),
                    Parameter('RegionsFilter', 'OrgAdmin'),
                    Parameter('SearchName', SearchName),
                    Parameter('DocumentName', DocumentName),
      Parameter('OrgName', OrgName),
     Parameter('UserName', UserName),
     Parameter('scroller', scroller),
     Parameter('suppressemptycatalogorgs',suppressemptycatalogorgs),
     Parameter('PageValue', PageValue),
                    Parameter('sortDirection', 'ASC'),
                    Parameter('sortCol', 'ORGANIZATIONNAME'))#">
    </isif><font color="#ffffff">Company Name</font></a>
       </th>
       <th width="10" align="middle" valign="top"></th>
       <th width="200" align="middle" valign="top"><font color="#ffffff">&raquo;</font>
    <font color="#ffffff">Pin/Unpin</font></a>
       </th>
    <td width="5</td>
       </tr>
          <tr>
           <td colspan="8" class="theme</td>
          </tr>
      <isif condition="#not (isdefined(SearchName))#">
       <isset name="SearchName" value="">
      </isif>
      <isset name="AnchorNo" value="#0#">
      <isset name="subbuyerlist_has_checkbox" value="false">
      <isloop iterator="PageInformation" alias="MB" preview="1">
   <isset name="AnchorNo" value="#AnchorNo + 1#" >
   <% String select_name; if(((String)getObject("MB:UUID")).lastIndexOf('.')== -1) select_name = "select_"+(String)getObject("MB:UUID"); else select_name = "select_2_"+((String)getObject("MB:UUID")).replace('.','_');
   %>
   <tr>
    <td colspan="8" bgcolor="#stringToHtml(ListRowColor</td>
   </tr>
   <tr bgcolor="#stringToHtml(ListRowColor)#">
    <td width="150" valign="left"><isif condition="#(UserName NE '') OR (DocumentName NE '')#"><img src="#WebRoot()#/images/plus.png" width="10" height="10" class="expand" name="#MB:UUID#" alt="" id="#MB:UUID#expand" style="display:block">
    <img src="#WebRoot()#/images/minus.png" width="10" height="10" class="colapse" name="#MB:UUID#" id="#MB:UUID#close" style="display:none"></isif>
    <%
     String Bpn = (String)getObject("MB:BPN");
     String name = (String)getObject("MB:ORGANIZATIONNAME");
     int index = Bpn.lastIndexOf(':');
     Bpn = Bpn.substring(index+1);
     int index1 = name.lastIndexOf(';');
     name = name.substring(index1+1);
    %>
     <a href="#URL(Action('CCDisplayWorkspace-Start'),
                      Parameter('CacheID',BuyerAttributesContainer:Attributes:BuyerID),
                      Parameter('MasterBuyerUUID', MB:UUID))#" class="udrline">
       <%= Bpn%>
      </a>&nbsp;
    </td>
   
    <td width="150" valign="middle" align="middle">
       <%= name%>&nbsp;<isprint value="#MB:GEOGRAPHIC#">
    </td>
    
    <td width="200" valign="middle" align="middle"><input type="checkbox" class="pin" name="<isprint value="#MB:ORGANIZATIONNAME#">" value="<isprint value="#BuyerAttributesContainer:Attributes:BuyerID#">" id="<isprint value="#MB:UUID#">"<isif condition="#(isDefined(MB:PINFLAG) AND (MB:PINFLAG EQ '1.00'))#"> checked<iselse></isif> ></td>  
   </tr>
    <td colspan="8" bgcolor="#stringToHtml(ListRowColor</td>
   </tr>
   <div id="#MB:UUID#" style="display:none">
   jkjlkjkl
   </div>


   <isif condition="#ListRowColor EQ '#ffffff'#">
    <isset name="ListRowColor" value="#'#e7e7e7'#">
   <iselse>
    <isset name="ListRowColor" value="#'#ffffff'#">
   </isif>
      </isloop>
  </table>