code: public void setDisplayMode(final DisplayMode displayMode) {
  		content.setDisplayMode(displayMode);
  		link.setOpenNewWindow(DisplayMode.OPEN_NEW_WINDOW.equals(content.getDisplayMode()));
  	}
docs: Sets the content display mode. Note that the window attributes will be ignored if the mode is changed to
  something other than {@link WContent.DisplayMode#OPEN_NEW_WINDOW}.
  
  @param displayMode the content display mode to set.