Thread.Simple.prototype = $.extend({}, Thread.prototype);

$.extend(Thread.Simple.prototype, {
	addTask: function(item) {
		this._data.push(item);

		return this;
	},

	_tasks: 0,
	_numTasks: 0,

	run: function() {
		var data = this._data.pop();

		if (data)
			this._run(data);
		else
			return true; // All tasks completed

		// Complete a task
		if (this._tasks < this._numTasks) {
			this._tasks++;
			// We can run more tasks per "thread call"; may be slow on large data sets
			// due to recursive functions behavior in JavaScript.
			return this.run();
		}

		this._tasks = 0;

		return false;
	}
});