Disabled right mouse click

Stage.showMenu = false;
_root.attachMovie("_mouseMc", “_mouseMc”, getNextHighestDepth());
_mouseMc.onEnterFrame = function() {
this._x = _xmouse;
this._y = _ymouse;

the above code i used to attach a mc as mouse cursor. original mouse cursor is hidden in the movie. But when i press right mouse click then original cursor appeared on the stage. i want that original cursor doesn’t appear.
Can anyone help me? it’s appreciable. THANKS