function AjaxRequest(section,divName)
{

         var pageurl = fullPath+"/ajaxrequest.php?section="+section+"&divName="+divName;         
        //alert(pageurl);   

        var xmlhttp;
        if (window.XMLHttpRequest)
          {// code for IE7+, Firefox, Chrome, Opera, Safari
          xmlhttp=new XMLHttpRequest();
          }
        else
          {// code for IE6, IE5
          xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
          }
        xmlhttp.onreadystatechange=function()
          {
          if (xmlhttp.readyState==4 && xmlhttp.status==200)
            {
                         document.getElementById(divName).innerHTML='';             
                document.getElementById(divName).innerHTML=xmlhttp.responseText;
            }
          }
        xmlhttp.open("GET",pageurl,true);
        xmlhttp.send();             

}

I have a Code like that in wordpress which is calling a page using ajax. It is working fine when the page are coming in ID like ?page_id=37 but stop working when I am activating Permalink like /overview/ajaxpage. I am getting 404 pafe error on xmlhttp.readyState. Can any one help me to solve it. I know its a permalink Problem probably this code of ajax is not sufficient for transmuting Permalink.