code: public final int getRelativeX() {
  		NativeEvent e = getNativeEvent();
  		Element target = getTarget();
  
  		return e.getClientX() - target.getAbsoluteLeft() + target.getScrollLeft() +
  				target.getOwnerDocument().getScrollLeft();
  	}
docs: Get relative x position on the page.
  @return x position in pixels