How to close IE JS window silently without prompting_javascript skills

IE6:

Copy code The code is as follows:

<script> <br>window.opener =null; <br>window.close(); <br></script>

IE7:

Copy code The code is as follows:

<script> <br>window.open('','_self'); <br>window.close(); <br> </script>

General code for IE6, IE7, FF:

Copy code The code is as follows :

<script> <br>window.opener=null; <br>window.open('','_self'); <br>window.close(); <br> </script>