https://www.insatsuyasan.com/js/jquery.recommendfooter02.js

1$(function() {
2    var slide = $('#recommend');
3    var contents = $('#recommend-contents');
4    //ŠJ‚­ƒ{ƒ^ƒ“
5    var openBtn = $('#open-btn img');
6    var btnOpenFlag = false;
7    var openFlag = false;
8    var panelSwitch = function() {
9        //•Â‚¶‚é
10        if (openFlag == true ) {
11            slide.stop().animate({'width' : '220px','height' : '35px'}, 600); 
12            openBtn.show();     //ŠJ‚­ƒ{ƒ^ƒ“‚É‚·‚é
13        }
14        //ŠJ‚­
15        else if (openFlag == false) {
16            slide.stop().animate({'width' : '220px','height' : '180px'}, 600); 
17            openBtn.hide();     //•Â‚¶‚éƒ{ƒ^ƒ“‚É‚·‚é
18        }
19    };
20    //ŠJ‚­ƒ{ƒ^ƒ“ƒNƒŠƒbƒN‚µ‚½‚ç
21    $('#open-btn').click(function(){
22        panelSwitch();
23        openFlag = !openFlag;
24        btnOpenFlag = true;
25    });
26    //‰æ–ʉºˆÊ’u‚ðŽæ“¾
27    var bottomPos = $(document).height() - $(window).height() - 600;
28    $(window).scroll(function () {
29        if (!btnOpenFlag) {
30            if ($(this).scrollTop() >= bottomPos) {
31                if (openFlag == false) {
32                    panelSwitch();
33                    openFlag = true;
34                }
35            } else {
36                if (openFlag) {
37                    panelSwitch();
38                    openFlag = false;
39                }
40            }
41        }
42    });
43});