A Custom ScrollBar, simple and clean.
var autoRefresh = 250; // Time for auto refresh, default is 0 (disabled)
var s = new Scroller($('#content'), $('#scroll'), autoRefresh);
s.reset(); // To reset positions
s.refresh(); // To recalc positions and sizes
s.goto(percent); // Set position of content by percent
s.gotoPos(y); // Set position of content by pixel