Function removeClass

src/ABPlayer.js:238–246

(elem, className)

		return oldClass.indexOf(className) >= 0;
	}
	var removeClass = function(elem, className) {
		if (elem == null) return;
		var oldClass = elem.className.split(" ");
		if (oldClass[0] == "") oldClass = [];
		if (oldClass.indexOf(className) >= 0) {
			oldClass.splice(oldClass.indexOf(className), 1);
		}
		elem.className = oldClass.join(" ");
	};
	var buildFromDefaults = function(n, d) {
		var r = {};
		for (var i in d) {