Select Item on a LookUp

Can anyone help me on how to select
a record on a jquery dialog and pass the
value to a textbox on Page1. I am using
function SelectGrid to pass the value, but
is not working.

Page1.aspx
[code]
        $(document).ready(function() {
            $("#btnLookUp").click(function() {
                $("#searchActor").dialog({
                    autoOpen: "false",
                    resizable: "false",
                    height: "250",
                    width: "320"
                });
            });
        });

        $(document).ready(function() {
            $("#btnSearch").click(function() {
                $("#actorsList").load("LookUp/ActorsList.aspx", { lname: $("#txtSearchCriteria").val() });
            });
            return false;
        });

        function SelectGrid(objValue, itemValue , popUpDialog) {
            $(objValue).val(itemValue);
            $(popUpDialog).dialog("close");                       
        }
[/code]

ActorsList.aspx Codebehind

[code]
private void LoadActors(string param)
        {
            DataTable dt = new DataTable();
            //Execute stored proc

            Response.Write("");
            foreach (DataRow dr in dt.Rows)
            {
                Response.Write("");
                Response.Write("");
                Response.Write("");
                Response.Write("");
                Response.Write("");
                Response.Write("");
            }
            Response.Write("

" + "Select" + "

" + dr[2].ToString() + "

" + dr[3].ToString() + "

" + dr[4].ToString() + "

");
        }
[/code]