鼠标点击图片，会进入图片展示页，再点鼠标右键，在新标签页中打开图片，会看到地址栏路径：http://images.cnblogs.com/cnblogs_com/xxxxx/1493052/xxxx.png 然后替换
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery火箭图标返回顶部代码 - 站长素材</title>
<link href="css/zzsc.css" rel="stylesheet" type="text/css" />
<!-- <script src="js/jquery.js?v=1.83.min" type="text/java script"></script> -->
<script src="https://blog-static.cnblogs.com/files/hxun/jquery-1.8.3.min.js" type="text/java script"></script>
<style type="text/css">
body{height:3000px;}
/*回到顶部*/
#rocket-to-top div {
left: 0;
margin: 0;
overflow: hidden;
padding: 0;
position: absolute;
top: 0;
width: 149px;
}
#rocket-to-top .level-2 {
background: url("http://images.cnblogs.com/cnblogs_com/hxun/1493052/o_o_rocket_button_up.png") no-repeat scroll -149px 0 transparent;
display: none;
height: 250px;
opacity: 0;
z-index: 1;
}
#rocket-to-top .level-3 {
background: none repeat scroll 0 0 transparent;
cursor: pointer;
display: block;
height: 150px;
z-index: 2;
}
#rocket-to-top {
background: url("http://images.cnblogs.com/cnblogs_com/hxun/1493052/o_o_rocket_button_up.png") no-repeat scroll 0 0 transparent;
cursor: default;
display: block;
height: 250px;
margin: -125px 0 0;
overflow: hidden;
padding: 0;
position: fixed;
right: 0;
top: 80%;
width: 149px;
z-index: 11;
}
</style>
<script type="text/java script">
// jQuery火箭图标返回顶部代码
$(function() {
var e = $("#rocket-to-top"),
t = $(document).scrollTop(),
n,
r,
i = !0;
$(window).scroll(function() {
var t = $(document).scrollTop();
t == 0 ? e.css("background-position") == "0px 0px" ? e.fadeOut("slow") : i && (i = !1, $(".level-2").css("opacity", 1), e.delay(100).animate({
marginTop: "-1000px"
},
"normal",
function() {
e.css({
"margin-top": "-125px",
display: "none"
}),
i = !0
})) : e.fadeIn("slow")
}),
e.hover(function() {
$(".level-2").stop(!0).animate({
opacity: 1
})
},
function() {
$(".level-2").stop(!0).animate({
opacity: 0
})
}),
$(".level-3").click(function() {
function t() {
var t = e.css("background-position");
if (e.css("display") == "none" || i == 0) {
clearInterval(n),
e.css("background-position