function ajaxRequest(){
                 var activexmodes=["Msxml2.XMLHTTP", "Microsoft.XMLHTTP"] //activeX versions to check for in IE
                 if (window.ActiveXObject){ //Test for support for ActiveXObject in IE first (as XMLHttpRequest in IE7 is broken)
                  for (var i=0; i<activexmodes.length; i++){
                   try{
                    return new ActiveXObject(activexmodes[i])
                   }
                   catch(e){
                    //suppress error
                   }
                  }
                 }
                 else if (window.XMLHttpRequest) // if Mozilla, Safari etc
                  return new XMLHttpRequest()
                 else
                  return false
                }

             function submitComment(rowid, comment, event){
                if(event.keyCode == 13){


                        var mypostrequest=new ajaxRequest()
                        mypostrequest.onreadystatechange=function(){
                         if (mypostrequest.readyState==4){
                          if (mypostrequest.status==200 || window.location.href.indexOf("../../resource/ajax.php")==-1){
                           document.getElementById("result").innerHTML=mypostrequest.responseText;
                          }
                          else{
                           alert("An error has occured making the request")
                          }
                         }
                        }

                        var parameters="addcomment="+comment+"&rowId="+rowid;
                        mypostrequest.open("POST", "../resource/ajax.php", true);
                        mypostrequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
                        mypostrequest.send(parameters);
                        alert();


                    }
            }