Function recursion

js/mui.animationframe.js:25–35

(callback)

	}

	function recursion(callback) {
		var qid = animation_id();
		(function wrapper() {
			callback();
			queues[qid] = rAF(function() {
				delete queues[qid];
				wrapper();
			});
		})();
		return qid;
	}

	function queue(callback) {
		var qid = animation_id();