jQuery (edge), HTML, CSS, JavaScript
What they asked for
Hide a series in the legend without actually removing the series as a whole.
Sparklines with HighCharts
A very distasteful demonstration of some JavaScript basics.
A simple alternative to the solution here: http://csswizardry.com/2010/12/simplified-page-borders-in-pure-css/
Just an exploration of the capabilities and support of the CSS :first-line pseudo element
From http://www.viget.com/inspire/custom-file-inputs-with-a-bit-of-jquery/
This used to render 4 different ways on 4 different browsers.
Only on Firefox there's a small gap between the border and the second last row