https://yuitaenglish.com/wp-content/themes/bunya/js/fixed_ad.js?ver=1.3.0

1jQuery(window).load(function() {
2
3  if (jQuery('#side_col .free_widget').children().hasClass('fixed_free_space')) {
4
5    var ad_box = jQuery('#side_col .free_widget');
6    var ad_box_height = ad_box.height();
7
8    var side_height = jQuery("#side_col").height();
9    var side_top = jQuery("#side_col").offset().top;
10
11    var main_height = jQuery("#contents").height();
12    var main_top = jQuery("#contents").offset().top;
13
14    var main_content_height = jQuery("#main_col").height();
15
16    if( main_content_height > side_height ) {
17
18      jQuery(window).scroll(function () {
19
20        if(jQuery(window).scrollTop() > side_height + side_top) {
21          ad_box.addClass('fixed_ad');
22        } else {
23          ad_box.removeClass('fixed_ad');
24        };
25
26        if(jQuery(window).scrollTop() > main_height + main_top - ad_box_height) {
27          ad_box.removeClass('fixed_ad');
28          ad_box.addClass('fixed_ad2');
29        } else {
30          ad_box.removeClass('fixed_ad2');
31        };
32
33      });
34
35    };
36
37  };
38
39  if (jQuery('#side_col2 .free_widget').children().hasClass('fixed_free_space')) {
40
41    var ad_box = jQuery('#side_col2 .free_widget');
42    var ad_box_height = ad_box.height();
43
44    var side_height = jQuery("#side_col2").height();
45    var side_top = jQuery("#side_col2").offset().top;
46
47    var main_height = jQuery("#contents").height();
48    var main_top = jQuery("#contents").offset().top;
49
50    var main_content_height = jQuery("#main_col").height();
51
52    if( main_content_height > side_height ) {
53
54      jQuery(window).scroll(function () {
55
56        if(jQuery(window).scrollTop() > side_height + side_top) {
57          ad_box.addClass('fixed_ad');
58        } else {
59          ad_box.removeClass('fixed_ad');
60        };
61
62        if(jQuery(window).scrollTop() > main_height + main_top - ad_box_height) {
63          ad_box.removeClass('fixed_ad');
64          ad_box.addClass('fixed_ad2');
65        } else {
66          ad_box.removeClass('fixed_ad2');
67        };
68
69      });
70
71    };
72
73  };
74
75});