https://ieo-lemosin.org/wp-content/themes/ieo-lemosin/js/jquery.firefly.js

1/*
2* jQuery Firefly v0.1
3* https://github.com/motyar/firefly
4
5* Licensed under the MIT license.
6* Copyright 2011 Dharmveer Motyar
7* http://motyar.blogspot.com
8*/
9(function($) {
10
11	/* Plugin defaults */
12	var defaults = {
13		images : [
14			'http://dharmmotyar.googlecode.com/svn/trunk/images/spark.png',
15			'http://dharmmotyar.googlecode.com/svn/trunk/images//spark2.png',
16			'http://dharmmotyar.googlecode.com/svn/trunk/images/spark3.png',
17			'http://dharmmotyar.googlecode.com/svn/trunk/images/spark4.png'],
18		total : 40
19	};
20	
21	$.firefly = function(settings) {
22		$.firefly.settings = $.extend({}, defaults, settings);
23			if($.firefly.preloadImages()){
24				for (i = 0; i < $.firefly.settings.total; i++){
25					$.firefly.fly($.firefly.create($.firefly.settings.images[$.firefly.random(($.firefly.settings.images).length)]));
26				}
27			}
28		return;
29	};
30	
31	/* Public Functions */
32	$.firefly.create = function(img){
33		spark = $('<img>').attr({'src' : img}).hide();
34		$(document.body).append(spark);
35			return spark.css({
36				'position':'absolute',
37				'z-index': $.firefly.random(20),
38				top: $.firefly.random(($(window).height()-150)),	//offsets
39				left: $.firefly.random(($(window).width()-150))		//offsets
40				}).show();
41}
42
43$.firefly.fly = function(sp) {
44	$(sp).animate({
45		top: $.firefly.random(($(window).height()-150)),	//offsets
46		left: $.firefly.random(($(window).width()-150))
47	}, (($.firefly.random(10) + 5) * 1100),function(){ $.firefly.fly(sp) } );
48};
49
50$.firefly.preloadImages = function() {
51	var preloads = new Object();
52	for (i = 0; i < ($.firefly.settings.images).length; i++){
53			preloads[i] = new Image(); preloads[i].src = $.firefly.settings.images[i];
54		}
55	return true;
56}
57
58$.firefly.random = function(max) {
59	return Math.ceil(Math.random() * max) - 1;
60}
61
62})(jQuery);