gistfile1.js

/* -------------------------------------- */
//iOS-like scrollbar

var $niceScrollContainers = $("[data-ios-scroll]");
$niceScrollContainers.each(function () {

	var $container = $(this),
		scrollClass = $container.attr("data-ios-scroll"),
		cursorWidth = "6px",
		$contentsLastChild = $container.children("*:last-child");

	if ($contentsLastChild.length) {
		var pos = $contentsLastChild.position(),
			containerContentsHeight = pos.top + $contentsLastChild.height() + parseInt($container.css("padding-top")) + parseInt($container.css("padding-bottom"));
	} else return;

	if (containerContentsHeight > $container.height()) {

		$container
		.niceScroll({
			cursorborder: "0",
			cursorwidth: cursorWidth,
			cursorcolor: "#797979",
			background: "#e6e6e6"
		})
		.rail
		.addClass("ios-scroll ios-scroll-rail " + scrollClass)
		.css("width", cursorWidth)

		$container
		.niceScroll()
		.cursor
		.addClass("ios-scroll ios-scroll-cursor " + scrollClass);

	} else {

		//Too short for scrollbars					
		$container
		.parent()
		.removeClass("fade-top fade-bottom");
	}

});