c# - ajax actionlink redirecting instead of updating tag -

when making ajax call controller redirecting , not updating tags code looks follows.

this in _layout.cshtml

<code>     <script src="@url.content("~/scripts/jquery-1.4.1.min.js")" type="text/javascript">         </script>      <script src="@url.content("~/scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>      <script src="@url.content("~/scripts/jquery.validate.min.js")" type="text/javascript"></script>      <script src="@url.content("~/scripts/microsoftajax.js")" type="text/javascript">     </script>      <script src="@url.content("~/scripts/microsoftmvcajax.js")" type="text/javascript">     </script>  </code> 

and web config looks like, have tried turning off unobtrusive javascript off no luck.

<code>   <appsettings>     <add key="clientvalidationenabled" value="true" />     <add key="unobtrusivejavascriptenabled" value="true" />   </appsettings> </code> 

my controller method looks this

<code>    [httppost]         public actionresult create(lesson lesson)         {             if (modelstate.isvalid)             {                 //save album                  lesson.datecreated = datetime.now;                 lesson.datesubmitted = datetime.now;                  lesson.statusid = submitted;                 lesson.submittedbyuserid = getappuserid();                 lesson.prjlessonid = createlessonprjid(lesson.projectid);                   storedb.lessons.insertonsubmit(lesson);                 storedb.submitchanges();                 return redirecttoaction("index");             }             // invalid – redisplay errors               else                 return view(lesson);           } </code> 

any ideas? in advance.

<code> @if (item.statusid != null)                 {                         <td id ="approvedmsg">@item.getlessonstatus(item.statusid.value)</td>                 }                 else                 {                        <td> </td>                 }                  @if (item.statusid != 3)                 {                     <td>                      @html.actionlink("edit", "edit", new { id = item.lessonid }) |                     @ajax.actionlink("delete", "delete", new { id = item.lessonid }, new ajaxoptions { updatetargetid = "approvedmsg"})                     </td>                    } </code> 

try deleting microsoftajax.js , microsoftmvcajax.js , use

<script src="<%=url.content("~/scripts/jquery-1.4.1.min.js")%>" type="text/javascript"></script> <script src="<%=url.content("~/scripts/jquery.validate.min.js")%>" type="text/javascript"></script> <script src="<%=url.content("~/scripts/jquery.unobtrusive-ajax.min.js")%>" type="text/javascript"></script> <script src="<%=url.content("~/scripts/jquery.validate.unobtrusive.min.js")%>" type="text/javascript"></script> 

a post here http://yobriefcase.posterous.com/unobtrusive-javascript-in-mvc3