anchor.diff:  					<div style="margin-bottom: 20px">
   						<select name="school" class="easyui-combotree" style="width: 100%"
   						        data-options="url:'${ctx }/org/tree',required:true,
  -						        loadFilter:clazzOrgTreeFilter,
  +						        loadFilter:$.ad.easyTreeDefaultLoadFilter,
   						        label:'<s:message code="clazz.school"/>:'">
   						</select>
                       </div>
  
positive.code: 						<select name="school_in_string" class="easyui-combotree" style="width: 160px" id="clazz_school"
  						        data-options="url:'${ctx }/org/tree',
  	                    		multiple:true,
  						        loadFilter:clazzOrgTreeFilter">
  						</select>
  						
  						<s:message code="clazz.admin"/>:
  
negative.code: 						<input class="easyui-combobox" name="admin"
  						style="width: 100%;"
  						data-options="
  		                    url:'${ctx }/user/find?type_eq_string=user.type.A',
  		                    method:'get',
  		                    valueField:'id',
  		                    textField:'name',
  