https://entireprizeenterprises.com/wp-content/themes/comicpress/js/scroll.js

1// JavaScript Document
2
3var up_timer;
4
5function getPosition() {
6    "use strict";
7    yoko = document.body.scrollLeft || document.documentElement.scrollLeft;
8    tate = document.body.scrollTop  || document.documentElement.scrollTop;
9
10}
11
12function pageup(x, y) {
13    "use strict";
14    if (up_timer) {clearTimeout(up_timer);
15        if (y >= 1) {
16            getPosition();
17            var divisionY = (tate - (tate / 5));
18            var Y = Math.floor(divisionY);
19            window.scrollTo(yoko, Y);
20            up_timer = setTimeout("pageup(" + yoko + "," + Y + ")", 2);
21        } else {
22            window.scrollTo(yoko, 0);
23            clearTimeout(up_timer);
24        } 
25            }
26
27    function scrollup() {
28        getPosition();
29        pageup(yoko, tate);
30    }
31}