my tours is up side down when using HTML5 viewer

Hi,

which browser are you using?
Firefox?

When getting mirrored or wrongly skewed images or very strange graphics errors and slow rendering, then your browser isn't using hardware accelerated rendering.

If Firefox - check the 'about:support' page for GPU-accerlated windows - and if there a 0 is shown, try updating your graphic card drivers.

Best regards,
Klaus