Fix error event so for firefox

[stevemayhew]

This error only fires on firefox, and when it does it logs a console
error (because ‘event’ is not declared).

Also, note that load event is notoriously unreliable for images (Chrome
will not fire it if the image is loaded from cache). Stay tuned next
for more reliable version of this code that will always fire the
complete. For now this fixes the console error message in FF.

Here's the CodePen that shows the fix working: http://s.codepen.io/stevemayhew/debug/dYYKvV

[desandro]

Thanks so much for this patch! A shame that JSHint totally missed this — I guess event is special.

Interestingly, no one has reported issues with cached images and lazy loading. All the same, I look forward to what you have in store.

Thanks again!

[stevemayhew]

Your welcome, Flickity is awesome

From Steve's iPhone

On Sep 12, 2015, at 9:25 AM, David DeSandro notifications@github.com wrote:

Thanks so much for this patch! A shame that JSHint totally missed this — I guess event is special.

Interestingly, no one has reported issues with cached images and lazy loading. All the same, I look forward to what you have in store.

Thanks again!

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