In the interest of seeing if I could make the "scroll to top of page" option appear quicker, I finally discovered the function that causes the option to appear when the viewer scrolls down the page at least 400px. By changing that to 300 I can get the quicker appearance that I wanted. What I haven't figured out is what the 700 in the "fade in, fade out" portions of the function is controlling. In trying different values for the "700" it appeared that the option faded out when the viewer scrolled up to the same position as when it appeared in scrolling down. What am I missing about what the 700 is controlling?

Thanks for the usual quick, complete reply. It's interesting that I assumed (first mistake) that since the "400" referred to image pixels of down scrolling for the "top of page' option to appear, the "700" referred to up scrolling pixels to have the option disappear. Never occurred to me that the 700 referred to the rate of auto up scrolling. In my tests I always up scrolled manually to see where the up scrolling started or stopped. I used test values for the 700 of 300 to 2000. If I had watched the rate of auto up scrolling in those tests it should have been pretty obvious to me. I'll stick with the 700.

Thanks.

Thanks. Lesson learned, though slowly. I've got to stop making those assumptions. My correct guess to error ratio is probably less than 10%, but that won't dissuade me.