Function scrollToChange

Picviewer CE+/Picviewer CE+.user.js:15607–15617

(next)

                this.canScroll=true;
                var scrollToChange=function(next){
                    if(self.canScroll){
                        if(prefs.gallery.transition){
                            self.canScroll=false;
                            setTimeout(function(){
                                self.canScroll=true;
                            },200);
                        }
                        next ? self.selectNext() : self.selectPrevious();
                    }
                }
                addWheelEvent(eleMaps['body'],function(e){//wheel事件
                    if(e.deltaZ!=0 || e.target.nodeName=="TEXTAREA")return;//z轴
                    if(eleMaps['sidebar-toggle'].style.visibility == 'hidden')return;