Sets the legends clickable state; setting this value to false disables toggling graphs on legend click.
Chart with legendNames:
Sets custom legend names. By default the name property of the series will be used if none are given.
Chart with multiple series per item:
The legendNames property can be used to associate multiple series with a legend item.
Chart with onClick:
Accepts a function that gets invoked if clickable is true. The function has the chart, and the click event (e), as arguments.
Chart with classNames:
Accepts a array of strings as long as the chart's series, those will be added as classes to the li elements.
Chart with removeAll:
Allow all series to be removed at once.
Chart with position 'bottom':
Sets the position of the legend element. top, bottomor any DOM2 Element are currently accepted. If a DOM Element is given, the legend will be appended as it's last child.