You are nesting events. So when ever you hover
event is triggered a new mouseup
event on the window is bound which logs multiple times.
Your code has to look something in these lines.
var dragBarPos = 0;
$(window).mouseup(function () {
dragBarPos = ($(".jspPane").position().left) * -1;
console.log(dragBarPos);
});
$("#super_feature").hover(function () {
if (dragBarPos > 1500) {
api.scrollTo(0);
}
});