history.back()

How do I manage to prescribe a one-way navigation for the user? I.e. is there a way to disable all those access opportunities, like ALT+ARROW_LEFT, MOUSE_Right (context-menu), that perform a history.back(), or alternatively to keep the current page until a certain action is performed.

For entire disable of navigation you have to do the following:
1. From your index.html / default.asp page open the main page of your site as following:
window.open("main.html","test","fullscreen=no,status=yes,toolbar=no,menubar=no,location=no");
2. All your pages should contain a script alike the following:
<script language=javascript>
<!--
function amsg() {
alert("This function is disabled!");
}
function nokeys() {
if ((window.event.keyCode == 93) | (window.event.keyCode == 18))
amsg();
}
function onlyleftclick() {
if (window.event.button > 1)
amsg();
}

document.onmousedown=onlyleftclick;
document.onkeydown=nokeys;
//-->
</script>

This a solution compatible only with IE 4.0 + browsers. I don't know very well the DOM on Netscape, but I think step 2 must be rewritten to provide compatibility with Netscape.

Have fun,

Dragos