static LS allJavascriptFromHTMLIncludingEventHandlers(S html) {
  ret allJavascriptFromHTMLIncludingEventHandlers(htmlTok(html));
}

static LS allJavascriptFromHTMLIncludingEventHandlers(LS tok) {
  LS list = allJavascriptFromHTML(tok);
    
  for (S tag : codeTokens(tok))
    for (S key, S value : tagParams(tag))
      if (swic(key, "on")) list.add(value);
      
  ret list;
}