Viewer Parameter > viewer > viewer.scrolltotop_at

viewer.scrolltotop_at_pagemoved

Sets whether to move the vertical scroll to the top of the page when moving a page.

Values

true	Move the vertical scroll to the top
false	Do not move the vertical scroll to the top

Reference

Applies only if the "viewer.pagedisplay" parameter value is "singlepage" or "doublepage".