/**
  * @param x
  * @param y
  * @param element on which the mouse went down
  */
 protected void fireMouseDown(double x, double y, String html) {
   IElement element = BrowserUtils.extractElement(html);
   for (IMouseListener mouseListener : Browser.this.mouseListeners) {
     mouseListener.mouseDown(x, y, element);
   }
 }