https://www.frasicelebri.it/static/js/fc/ui/freeze.min.js?a1d7c688

1define(['jquery'], function ($) {
2	
3	var default_opts = {
4		position: 'center'
5	};
6	
7	function freezeElement($target, opts) {
8		var opts = opts || {}
9		opts = $.extend(default_opts, opts);
10		
11		$target.addClass('frozen');
12		
13		$freeze = $('<div class="freeze">');
14
15		if (opts.position) {
16			$freeze.css('background-position', 'center ' + opts.position);
17		}
18		else if (opts.position == 'top') {
19			$freeze.addClass('freeze-on-top');
20		}
21
22		$target.append($freeze);
23	}
24	
25	function unfreezeElement($target) {
26		$target.find('.freeze').remove();
27		$target.removeClass('frozen');
28	}
29	
30	return {
31		'freeze': freezeElement,
32		'unfreeze': unfreezeElement
33	};
34});