Fixed a problem when using the open function

[RareDevil]

I had a problem where e.offsetX and e.offsetY is undefined. This was mainly when i used the open function like the example below.
$(selector).contextMenu({ x: ShowX, y: ShowY });
So i have made a check if they are undefined and if they are pageX and pageY are used instead.

[RareDevil]

@bbrala Have the time to look at this?

[bbrala]

The first thing that i was thinking is that ShowX and ShowY aren't documented so shouldn't you use other properties to do this?

http://swisnl.github.io/jQuery-contextMenu/docs/events.html

[RareDevil]

Well ShowX and ShowY is just a name i used instead of typing in a random number like this
$(selector).contextMenu({ x: 50, y: 25 });
But the main thing was that when i used this command i experienced that e.offsetX and e.offsetY was undefined in the code. If you try to look at code i changed then before my fix it used e.offsetX and e.offsetY and those was undefined so all i did was made a check to make sure that they was not undefined before they was used and if they is undefined e.pageX, e.pageY is used instead.

[bbrala]

Interestingly the docs even say: // or $('.context-menu-one').contextMenu({x: 100, y: 100});

I've merged your change, thanks again for the contribution :)