function MoveUp(obj) {
                var index = obj.parentElement.parentElement.rowIndex;
                var RightTable = document.getElementById("<%= grd_alter_reorder.ClientID %>");

                var i = 0;

                for (i = 2; i < RightTable.rows.length; i++) {
                    if (i == index) //is selected ?
                    {
                        SendUp(RightTable.rows[i], RightTable.rows[i - 1]);
                    }
                }
            }

            //function to select a row to move down
            function MoveDown(obj) {
                var index = obj.parentElement.parentElement.rowIndex;
                var RightTable = document.getElementById("<%= grd_alter_reorder.ClientID %>");
                var i = 0;
                var RowToMove = 0;
                var PreviousRow;
                var CurrentRow;

                for (i = 1; i < RightTable.rows.length - 1; i++) {
                    if (i == index) {
                        RightTable.rows[i];

                        RowToMove = i;

                        //appends the selected row to the end of the Right Table
                        RightTable.rows[i].parentNode.appendChild(RightTable.rows[i]);

                        //this code moves the appended row up till it reaches
                        //to one position less than its original position
                        for (i = RightTable.rows.length - 1; i > RowToMove + 1; i--) {
                            CurrentRow = RightTable.rows[i];
                            PreviousRow = RightTable.rows[i - 1];

                            SendUp(CurrentRow, PreviousRow);
                        }
                    }
                }
            }

DataTable Gdt1 = new DataTable();

        for (int i = 0; i < grd_alter_reorder.Columns.Count - 1; i++)
        {
            Gdt1.Columns.Add(grd_alter_reorder.Columns[i].FooterText);
        }
        foreach (GridViewRow row in grd_alter_reorder.Rows)
        {
            DataRow dr = Gdt1.NewRow();
            for (int j = 0; j < grd_alter_reorder.Columns.Count - 1; j++)
            {

                dr[grd_alter_reorder.Columns[j].FooterText] = row.Cells[j].Text;
            }

            Gdt1.Rows.Add(dr);
        }

        grd_alter_reseq.DataSource = Gdt1;
        grd_alter_reseq.DataBind();