jQuery插件，添加按钮来滚动overflow-x盒。

Summary Create left/right buttons for horizontal scrolling. Could be useful when having super-height overflow-x boxes. Options $.fn.hScrollBtns.defaults = { * step: 20, // scroll distance * speed: 25, // number of milliseconds to scroll by 1 step * offset: null, // horizontally push buttons away from box, if null, use the half of button width * startEvent: "mousedown", // event type(s) for buttons to start scroll * stopEvent: "mouseup", // event type(s) for buttons to stop scroll * safeHeight: 0 // boxes with height less than this will not show any buttons (still have button elements but not interactive) };

hScrollBtns-1.1.js
hScrollBtns-1.1.min.js