if (window.Event) document.captureEvents(Event.MOUSEUP); 

function nocontextmenu(){
	event.cancelBubble = true
	event.returnValue = false;
	return false;
}
function norightclick(e){
	if (window.Event){
		if (e.which == 2 || e.which == 3) return false;
	}
else
	if (event.button == 2 || event.button == 3){
		event.cancelBubble = true
		event.returnValue = false;
		return false;
	}       
}
document.oncontextmenu = nocontextmenu;         
document.onmousedown = norightclick;            

var message="!"; // Message for the alert box

function click(e) {
	if (document.all) {
		if (event.button == 2) {return false;}
	}
	if (document.layers) {
		if (e.which == 3) {return false;}
	}
}
if (document.layers) {document.captureEvents(Event.MOUSEDOWN);}
document.onmousedown=click;