http://www.sjwj.com/skin/default/js/qqonline.js

1/* ----- 侧边悬浮 ---- */
2$(document).on("mouseenter", ".suspension .a", function () {
3	var _this = $(this);
4	var s = $(".suspension");
5	var isService = _this.hasClass("a-service");
6	var isServicePhone = _this.hasClass("a-service-phone");
7	var isQrcode = _this.hasClass("a-qrcode");
8	if (isService) {
9		s.find(".d-service").show().siblings(".d").hide();
10	}
11	if (isServicePhone) {
12		s.find(".d-service-phone").show().siblings(".d").hide();
13	}
14	if (isQrcode) {
15		s.find(".d-qrcode").show().siblings(".d").hide();
16	}
17});
18$(document).on("mouseleave", ".suspension, .suspension .a-top", function () {
19	$(".suspension").find(".d").hide();
20});
21$(document).on("mouseenter", ".suspension .a-top", function () {
22	$(".suspension").find(".d").hide();
23});
24$(document).on("click", ".suspension .a-top", function () {
25	$("html,body").animate({
26		scrollTop: 0
27	});
28});
29$(window).scroll(function () {
30	var st = $(document).scrollTop();
31	var $top = $(".suspension .a-top");
32	if (st > 400) {
33		$top.css({
34			display: 'block'
35		});
36	} else {
37		if ($top.is(":visible")) {
38			$top.hide();
39		}
40	}
41});