How to diable Right Click in JavaScript?

Neat code to restrict a user to right click and view the code or save an image. Though, it does not assure complete safety for your source (there is always a way to copy them), but it is better than nothing.

Copy & Paste this script under the HEAD in the HTML area of your webpage.

<script>
var isNS = (navigator.appName == "Netscape") ? 1 : 0;
if(navigator.appName == "Netscape") document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
function mischandler(){
return false;
}
function mousehandler(e){
var myevent = (isNS) ? e : event;
var eventbutton = (isNS) ? myevent.which : myevent.button;
if((eventbutton==2)||(eventbutton==3)) return false;
}
document.oncontextmenu = mischandler;
document.onmousedown = mousehandler;
document.onmouseup = mousehandler;
</script>