OHLC, HLC and Candlestick charts are all created using the $.jqplot.OHLCRenderer plugin. The plots on this page make use of the highlighter plugin which shows a customized tooltip as the mouse moves over a data point.
The previous plots use the following data set. jqPlot will parse most human readable date formats. It is always safest, however, to pass a date in as a JavaScript timestamp rather than have jqPlot parse an arbitrary date string.