img.fadeTo(1, 0); // make the image transparent - we see canvas and bgimg through it.
var ol = $('<ol>', {'class': myClassName})
.css({clear: 'both', margin: 0, listStyle: 'none', maxHeight: '24em', maxWidth: w + 'px', overflowY: 'auto', position: 'relative', border: '3px dashed red'})
.attr({'data-expandtext' : expandLegend, 'data-collapsetext': collapseLegend});
// ol below image, hr below ol. original caption pushed below hr.