This is for you IE 4.0 users only. It disables the mouse button. Every time the people attempt to click, they get an alert box saying they can't. I can't for the life of me understand why you'd want to use this, but here ya go. You can hit the BACK button to get out of this page.
<script language="javascript">
function click() {
if (event.button==1) {
alert('No clicking!')
}
}
document.onmousedown=click
</script>