Not that I'm trying to prevent 'View Source' or anything silly like that, but I'm making some custom context menus for certain elements.
EDIT: response to answers: I've tried this:
<a id="moo" href=''> </a>
<script type="text/javascript">
var moo = document.getElementById('moo');
function handler(event) {
event = event || window.event;
if (event.stopPropagation)
event.stopPropagation();
event.cancelBubble = true;
return false;
}
moo.innerHTML = 'right-click here';
moo.onclick = handler;
moo.onmousedown = handler;
moo.onmouseup = handler;
</script>
If you don't care about alerting the user with a message every time they try to right click, try adding this to your body tag
<body oncontextmenu="return false;">
This will block all access to the context menu (not just from the right mouse button but from the keyboard as well)
However, there really is no point adding a right click disabler. Anyone with basic browser knowledge can view the source and extract the information they need.