Ok so as far as I understand it so far we have 2 approaches
Firstly some javascript which I can employ within a given script. But this switches right click off for everything.
window.oncontextmenu = function() {
return false;
};
or in the html can code
<body oncontextmenu="return false;">
but I cannot thus far find anywhere that will give me javascript or jquery solution where I can apply this to a given selector. Is this simply not possible or am I mis-understanding something.
I am finding that on a single right click my submenu appears immediately followed by the browser's default menu. The only way I have found to suppress this is setting oncontextmenu to false. Is there a more refined solution?
Further Note to accepted answer
Also applied successfully on a dynamic menu using delegate:
$(document).on("contextmenu", "#existing_Flavours .field_Input_Left.flavour", function(){
return false; // suppress browsers default right click menu
});