customInterval.js

var custom_interval_process = [];

function customInterval(callback, get_delay) {
	var uid = custom_interval_process.length,
		index = 0;

	(function loop() {
		custom_interval_process[uid] = w.setTimeout(function() {
			++index;
			callback();
			loop();
		}, get_delay(index));
	})();

	return uid;
}

function customIntervalClear(uid) {
	return w.clearTimeout(uid);
}