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| $(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
| })
| }),
| //download by www.sucaijiayuan.com
| $(".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", "0px 0px");
| return
| }
| switch (t){
| case "0px 0px":
| e.css("background-position", "-298px 0px");
| break;
| case "-298px 0px":
| e.css("background-position", "-447px 0px");
| break;
| case "-447px 0px":
| e.css("background-position", "-596px 0px");
| break;
| case "-596px 0px":
| e.css("background-position", "-745px 0px");
| break;
| case "-745px 0px":
| e.css("background-position", "-298px 0px");
| }
| }
| if (!i) return;
| n = setInterval(t, 50),
| $("html,body").animate({scrollTop: 0},"slow");
| });
| });
|
|
