Velocity Reviews - disable title bar, status bar, and address bar of a browser window

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- - disable title bar, status bar, and address bar of a browser window (http://www.velocityreviews.com/forums/t85264-disable-title-bar-status-bar-and-address-bar-of-a-browser-window.html)

disable title bar, status bar, and address bar of a browser window

I want to disable the title bar, status bar and address bar of a
window, but I couldn't find the syntax. I tried the following but not
working. any ideas??

window.document.statusbar.enable = false;
window.document.titlebar.enable = false;
window.document.addressbar.enable = false;

<html>
<title>hey</title>
<script type="text/javascript">
function changetitle()
{
alert(window.document.title);
window.document.title = "heyhey";
window.document.statusbar.enable = false;
alert(window.document.title);
}
</script>
<body onload="changetitle()">
</body>
</html>