/// <reference path="jQuery/jquery-1.3.2-vsdoc.js" />

var g_slide = (function () {
	// Constants
	var c_targetName = "splodge";
	var c_target = "#" + c_targetName;
	var c_count = 12;

	// Properties
	var _current = {
		index: null,
		nextIndex: function () {
			if (this.index == null || ++this.index > c_count)
				this.setIndex(1);
			else this.setIndex(this.index);

			return this.index;
		},
		setIndex: function (index) {
			if ((index + 1) > c_count)
				index = 1;

			this.index = index;
		}
	};

	var _interval = null;

	var _path = "/content/images/splodges/splodge{i}.jpg";

	// Methods
	var _init = function () {
		if (_current.index == null)
			_current.setIndex(Math.ceil(Math.random() * c_count));
			
		if ($(c_target).length == 0)
			$("body").prepend("<div id=\"" + c_targetName + "\"></div>");
	};

	var _changeBackground = function (idx) {
		var url = _path.replace(/{i}/, idx);
		var img = new Image();
		img.onload = function () {
			$(c_target).fadeOut(function () {
				$(c_target).css({ backgroundImage: "url(" + url + ")" });
				$(c_target).fadeIn();
			});
		};
		img.src = url;
	};

	var _start = function () {
		_stop();
		_init();
		_interval = setInterval(function () {
			_changeBackground(_current.nextIndex());
		}, 20000);

		_changeBackground(_current.index);
	};

	var _stop = function () {
		if (_interval)
			clearInterval(_interval);
	};

	// Events
	$(document).ready(function () {
		if (g_speed && g_speed.isSlow())
			return;
			
		if (!$("body").hasClass("home"))
			_start();
	});

	return {
		start: _start,
		stop: _stop
	};
})();