HTML validation

[bmix]

Hello,

thanks for jQuery'ing this! Highly appreciated!

I am, by no means, well known in HTML5 or jQuery, but as I see it, the use of the private element attributes for configuration are incompatible with Polyglot XHTML5 and even result in invalid HTML5 (plain, that is). See Stackoverflow: Custom attributes - Yea or nay? for more on this. In order to result in valid HTML5, all that would be needed is the use of 'data-' as the start of the private attributes. For Polyglot the empty attributes (first, second, third in 'index.html') would need to become first="first" I think, but I did not investigate much into it.

Is there any special reason, you do it this way? Could this be changed? (I am aware, that configuration can be done differently)