public void preRender(GuiContainer cont, int mousex, int mousey) {

        checkForGuiChanges(cont, mousex, mousey);
        int guiWidth = ((IGuiContainer) cont).getXSize();
        int newLeft = xPos / 2 - guiWidth / 2;
        if (!mc.thePlayer.getActivePotionEffects().isEmpty()) {
            newLeft += 50;
        }