1/* Copyright (c) 2010
2 * @author Laurence Wheway
3 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
4 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
5 *
6 * @version 1.2.0
7 */
8(function($) {
9	jQuery.extend({
10		isOnScreen: function(box, container) {
11			//ensure numbers come in as intgers (not strings) and remove 'px' is it's there
12			for(var i in box){box[i] = parseFloat(box[i])};
13			for(var i in container){container[i] = parseFloat(container[i])};
14
15			if(!container){
16				container = {
17					left: $(window).scrollLeft(),
18					top: $(window).scrollTop(),
19					width: $(window).width(),
20					height: $(window).height()
21				}
22			}
23
24			if(	box.left+box.width-container.left > 0 &&
25				box.left < container.width+container.left &&
26				box.top+box.height-container.top > 0 &&
27				box.top < container.height+container.top
28			) return true;
29			return false;
30		}
31	})
32
33
34	jQuery.fn.isOnScreen = function (container) {
35		for(var i in container){container[i] = parseFloat(container[i])};
36
37		if(!container){
38			container = {
39				left: $(window).scrollLeft(),
40				top: $(window).scrollTop(),
41				width: $(window).width(),
42				height: $(window).height()
43			}
44		}
45
46		if(	$(this).offset().left+$(this).width()-container.left > 0 &&
47			$(this).offset().left < container.width+container.left &&
48			$(this).offset().top+$(this).height()-container.top > 0 &&
49			$(this).offset().top < container.height+container.top
50		) return true;
51		return false;
52	}
53})(jQuery);
54