Youtube TV in Google Sites - load Playlists on load

[dorsetdog-dot-com]

I'm not very au fait with github, don't find it very user friendly for novices, so excuse me for posting this here.

With thanks to John at Dynamic Drive / forum, I have been tweaking this YouTube gallery to work in Google Sites.
The list now displays by default with the Playlist displayed, instead of displaying the numerous videos in the YouTube account.

And when a playlist is selected, the videos in that playlist remain displayed until the button is clicked on to display all playlists again

It also has a mouse over of "Click to open the Playlist - ~"

But I wonder if there is a way to make it display the Playlist without loading "all videos" first - to stop the loading flicker?

And I wonder if there is a way for it to display the playlists alphabetically A - Z ?

Page is http://www.dorsetdog.com/you-tube-videos

The js file is at https://sites.google.com/site/dorsetdogshow/youtube-gallery.js

If I've posted this in the wrong place, then please be good enough to remove it rather than just deleting it.

Thanks

Mark