title: Detect mousedown/click event on browser's scrollbar
body: <p>I know that with the jQuery expression <code>$(element).on("mousedown", function(evt) { ... });</code> you can handle <code>mousedown</code> events on an element.</p>
  
  <p>Though I need to detect the <code>mousedown</code> or <code>click</code> event on the browser's scroll bar and need to run some function.</p>