Ribbon Hide

Hi,

I created a custom workbook with hide ribbon by using vba name is "Magic file".But when i open another workbook with after opening "Magic file" at a time, next work book also hiding ribbon.So how can i solved this problem? Plz help me..Hide ribbon code-

 "Private Sub Workbook_Open()
                                             Application.Visible = False
                                             UserForm1.Show
                                             Application.ExecuteExcel4Macro "show.toolbar(""ribbon"",false)"
                                             End Sub"