sclass HDivWithVerticalExpandButton {
  int initialHeight;
  S expandButtonText = "Read more";
  O contents;
  
  *(int *initialHeight, O *contents) {}
  
  S html() {
    ret div(contents, class := "expandable", 
      style := "padding: 20px 10px; height: " + initialHeight + "px; overflow: hidden;")
      + hbutton(expandButtonText, onclick := [[
        $(this).prev('.expandable').css('height', 'inherit');
        $(this).hide();
      ]]);
  }
  
  bool needsJQuery() { true; }
}