// disable right click
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;
  	}
}
if (document.layers)
  	document.captureEvents(Event.MOUSEDOWN);
	document.oncontextmenu = nocontextmenu;
	document.onmousedown = norightclick;
	document.onmouseup = norightclick;