Scroll to Top scrolls unintentionally

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1) Script Title: jQuery Scroll to Top Control v1.1

2) Script URL (on DD): http://www.dynamicdrive.com/dynamicindex3/scrolltop.htm

3) Describe problem: Scroll to Top works nicely. But on pages with clickable small images to view a large one, the page has returned to the top when the arrow for a page back is used (the only way to go back to the small images).
Without the Scroll to Top script the page returns in the position of the small image as before.

Is it possible to modify the Scroll to Top script or other settings so the page will go to top only when the button is used and not when the page is refreshed?

Thank you.
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The problem only occurs on a local server.
On a server at a host all is well.

Thank you for your attention.

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