This will work with both relative and absolute position for the chart and will apply the tooltips appropriately. I have tested in a normal context and then also using the chart in the second column of two column table i.e. in a different position on the screen. Without this, the default tooltips will appear at the same position no matter where the chart is placed. They will appear misplaced. The fix I have provided allows the tooltips to appear smoothly with the chart, no matter where it is placed on the web page.