The right click of the mouse comes up with a popu menu. This behavior can not be stopped. Normally a return of 'false' by the mouse down handler should cancel the event procesing, but this is not happening. Sample mouse down handler: function mouseDownHandler(e) { if (isNav) { if (e.which == 2 || e.which == 3) { // alert("Using the right button is not allowed."); return false; } } else { if (window.event.button==2) { alert("Using the right button is not allowed."); window.event.cancelBubble = true; return false; } } return true; } function init() { document.captureEvents(Event.FOCUS | Event.KEYDOWN | Event.MOUSEDOWN); document.onFocus = focusHandler; document.onKeyDown = keyHandler; document.onMouseDown = mouseDownHandler; }

Browser, not engine ---> DOM Level 0 Joop, could you attached reduced testcase by using the "Create a New Attachment" link above? Thanks; that will speed things along -

This test case shows that the mouse down handler fires when a right click of the mouse is given, but it can not stop the standard popup menu from displaying.

Confirming report - as Joop says, the |return false;| is not preventing the context menu from coming up. Reassigning to DOM Events and cc'ing Boris. I don't know too much about this topic, but I did research these bugs: bug 72084 "There is no way to disable the context menu upon right-click" bug 86193 "There is no way to always open the context menu upon right-click" The second bug is still open as a "counter-bug" to the first, because the idea of disabling the context menu turned out to be controversial. But I think the fix in bug 72084 allows HTML authors to disable context menus this way: ------- Additional Comment_ #9 From Mike Pinkerton 2001-04-04 14:28 ------- There is now an oncontextmenu event. JS handlers can call event.preventDefault() and the context menu will never fire. Joop, does that work? If so, we should probably mark this as a duplicate of bug 72084 -

The work-around given (disabling the context menu via the 'oncontextmenu' event) works for us. Marking it as a duplicate of 72084 *** This bug has been marked as a duplicate of 72084 ***

Joop: thanks - marking Verified Duplicate