This is an improvement over my first attempt (I canceled the previous pull request). It turns out that the added content can be placed in the HTML_HEADER variable as long as the variable contains only one top-level element ("<div>whatever</div>" is OK but "<div>whatever</div><table>whatever else</table>" is not).
This is an improvement over my first attempt (I canceled the previous pull request). It turns out that the added content can be placed in the HTML_HEADER variable as long as the variable contains only one top-level element ("<div>whatever</div>" is OK but "<div>whatever</div><table>whatever else</table>" is not).