auto closing window- help

[johno5]

i need to make a self closing window which will close a set time after opening. i've got the window to close but on closing a Explorer msgbox flashes up saying `the web pg ur viewing is trying 2 close the window - do u want 2 close`

heres my script

<SCRIPT LANGUAGE=&quot;JavaScript&quot;><!--
setTimeout('self.close()',1000);
//--></SCRIPT>

please could some1 help me get rid of the Explorer msgbox!

 

[johno5]

i've sorted my problem

thanx anyway