https://oemkiosks.com/js/jquery-visible.min.js?v=1.1.5.12.1

1(function($){
2
3    /**
4     * Copyright 2012, Digital Fusion
5     * Licensed under the MIT license.
6     * http://teamdf.com/jquery-plugins/license/
7     *
8     * @author Sam Sehnert
9     * @desc A small plugin that checks whether elements are within
10     *       the user visible viewport of a web browser.
11     *       can accounts for vertical position, horizontal, or both
12     */
13    var $w=$(window);
14    $.fn.visible = function(partial,hidden,direction,container){
15
16        if (this.length < 1)
17            return;
18
19	// Set direction default to 'both'.
20	direction = direction || 'both';
21
22        var $t          = this.length > 1 ? this.eq(0) : this,
23						isContained = typeof container !== 'undefined' && container !== null,
24						$c				  = isContained ? $(container) : $w,
25						wPosition        = isContained ? $c.position() : 0,
26            t           = $t.get(0),
27            vpWidth     = $c.outerWidth(),
28            vpHeight    = $c.outerHeight(),
29            clientSize  = hidden === true ? t.offsetWidth * t.offsetHeight : true;
30
31        if (typeof t.getBoundingClientRect === 'function'){
32
33            // Use this native browser method, if available.
34            var rec = t.getBoundingClientRect(),
35                tViz = isContained ?
36												rec.top - wPosition.top >= 0 && rec.top < vpHeight + wPosition.top :
37												rec.top >= 0 && rec.top < vpHeight,
38                bViz = isContained ?
39												rec.bottom - wPosition.top > 0 && rec.bottom <= vpHeight + wPosition.top :
40												rec.bottom > 0 && rec.bottom <= vpHeight,
41                lViz = isContained ?
42												rec.left - wPosition.left >= 0 && rec.left < vpWidth + wPosition.left :
43												rec.left >= 0 && rec.left <  vpWidth,
44                rViz = isContained ?
45												rec.right - wPosition.left > 0  && rec.right < vpWidth + wPosition.left  :
46												rec.right > 0 && rec.right <= vpWidth,
47                vVisible   = partial ? tViz || bViz : tViz && bViz,
48                hVisible   = partial ? lViz || rViz : lViz && rViz,
49		vVisible = (rec.top < 0 && rec.bottom > vpHeight) ? true : vVisible,
50                hVisible = (rec.left < 0 && rec.right > vpWidth) ? true : hVisible;
51
52            if(direction === 'both')
53                return clientSize && vVisible && hVisible;
54            else if(direction === 'vertical')
55                return clientSize && vVisible;
56            else if(direction === 'horizontal')
57                return clientSize && hVisible;
58        } else {
59
60            var viewTop 				= isContained ? 0 : wPosition,

61                viewBottom      = viewTop + vpHeight,
62                viewLeft        = $c.scrollLeft(),
63                viewRight       = viewLeft + vpWidth,
64                position          = $t.position(),
65                _top            = position.top,
66                _bottom         = _top + $t.height(),
67                _left           = position.left,
68                _right          = _left + $t.width(),
69                compareTop      = partial === true ? _bottom : _top,
70                compareBottom   = partial === true ? _top : _bottom,
71                compareLeft     = partial === true ? _right : _left,
72                compareRight    = partial === true ? _left : _right;
73
74            if(direction === 'both')
75                return !!clientSize && ((compareBottom <= viewBottom) && (compareTop >= viewTop)) && ((compareRight <= viewRight) && (compareLeft >= viewLeft));
76            else if(direction === 'vertical')
77                return !!clientSize && ((compareBottom <= viewBottom) && (compareTop >= viewTop));
78            else if(direction === 'horizontal')
79                return !!clientSize && ((compareRight <= viewRight) && (compareLeft >= viewLeft));
80        }
81    };
82
83})(jQuery);