Auto Scroll Top Opencart Module, make it possible for your customers to return to the top of the page with
one simple click. The module adds a smooth scrolling effect and eliminates
the need to torture the mousewheel to scroll through loads of content. The
Scroll Top button is not always visible, appearing only if the page is scrolled
down. Scrolling is slight and animated: no page refreshing or sharp jumps.

FEATURES:

Scroll Top button
Configurable scrolling speed.
Configurable in daylay button.
Configurable our delay speed
Possibitity to upload the button image
Autometically show/hide a smooth png button
The page scroll to top will be auto speed depends on page scroll size.