2 <head> 3 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 4 <title></title> 5 <script src="../Scripts/jquery-1.10.2.min.js"></script> 6 <script> 7 $(
function () {
8 $(‘body‘).append(‘<div id="gotop" onclick="goTop();"></div>‘);
9 $(window).scroll(
function () {
10 300 < $(
this).scrollTop() ?
11 ($(‘#gotop‘).show(),
12 $(‘#gotop‘).css(‘left‘, $(‘.z‘).offset().left + $(‘.z‘).width() + 20),
13 $(‘#gotop‘).css(‘top‘, $(window).height() - 300))
14 : $(‘#gotop‘).hide()
15 });
16 $(window).resize(
function () {
17 $(‘#gotop‘).css(‘left‘, $(‘.z‘).offset().left + $(‘.z‘).width() + 20)
18 })
19 });
20 function goTop(u, t, r) {
21 var scrollActivate = !0;
22 if (scrollActivate) {
23 u = u || 0.1;
24 t = t || 16;
25 var s = 0,
26 q = 0,
27 o = 0,
28 p = 0,
29 n = 0,
30 j = 0;
31 document.documentElement && (s = document.documentElement.scrollLeft || 0, q = document.documentElement.scrollTop || 0);
32 document.body && (o = document.body.scrollLeft || 0, p = document.body.scrollTop || 0);
33 n = window.scrollX || 0;
34 j = window.scrollY || 0;
35 s = Math.max(s, Math.max(o, n));
36 q = Math.max(q, Math.max(p, j));
37 p = 1 + u;
38 window.scrollTo(Math.floor(s / p), Math.floor(q / p));
39 0 < s || 0 < q ? window.setTimeout(‘goTop(‘ + u + ‘, ‘ + t + ‘)‘, t) : ‘undefined‘ !=
typeof r && r()
40 }
else {
41 scrollActivate = !0
42 }
43 }
44 </script>45 <style>
46 #gotop:hover {
47 background-position:
0px -116px;
48 }
49
50 #gotop {
51 width:
29px;
52 height:
106px;
53 position:
fixed;
54 display:
none;
55 cursor:
pointer;
56 background:
url(‘go_to_top.png‘) no-repeat scroll 0px 0px transparent;
57 }
58 </style>59 </head>60 <body>61 <div class="z" style="border: 1px dashed; height: 2999px; width: 977px; margin: 0 auto;">62 </div>63 </body>
