我已经下载了JQuery MMenu。我已按照说明操作并尝试了StackOverflow的几个修复程序，但仍然没有让它工作。我修改了演示并使其工作，但在我复制代码和CSS后，它仍然无法正常工作。感谢您的帮助和回复。 （大多数CSS不是我的。我在这个网站上使用W3Layout模板。）
HTML：
<!DOCTYPE HTML>
<html>
<head>
<title>High Rollers Car Club | Home</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link href='http://fonts.googleapis.com/css?family=Julius+Sans+One' rel='stylesheet' type='text/css'>
<link href="css/style.css" rel="stylesheet" type="text/css" media="all" />
<!-- mobile menu -->
<link type="text/css" rel="stylesheet" href="dist/core/css/jquery.mmenu.all.css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="dist/core/js/jquery.mmenu.min.all.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$("#mobilemenu").mmenu();
});
</script>
</head>
<body id="indexPg">
<!--start header-->
<div class="h_bg">
<div class="wrap">
<div class="wrapper">
<div class="header">
<div class="logo">
<a href="index.html"><img class="hideOnMobile" src="images/logoHRCC_275x275px.png" alt="" /> </a>
<div class="mHeader">
<a href="#mobilemenu"><!--<img class="hideOnDesktop mobileStyle" src="images/logoHRCC_275x275px.png" alt="" /> --></a>
</div> <!-- End mHeader -->
</div> <!-- End Logo -->
<div class="spacer"></div>
<div class="hideOnDesktop">
<nav id="mobilemenu">
<ul>
<li class="active"><a href="index.html"><span>Home</span></a></li>
<li><a href="garage.html"><span>Garage</span></a></li>
<li class="has-sub"><a href="join.html"><span>Connect</span></a>
<ul>
<li><a href="eventCalendar.html"><span>Event Calendar</span></a>
<!--<ul>
<li><a href="service.html"><span>Sub Item 1</span></a></li>
<li class="last"><a href="service.html"><span>Sub Item 2</span></a></li>
</ul> -->
</li>
<li><a href="join.html"><span>Membership</span></a></li>
<!--<ul>
<li><a href="service.html"><span>Sub Item 1</span></a></li>
<li class="last"><a href="service.html"><span>Sub Item 2</span></a></li>
</ul>-->
<li><a href="join.html"><span>Vendor Registration</span></a>
<li><a href="join.html"><span>Venue Sponsorship</span></a>
<li><a href="join.html"><span>Show Registration</span></a>
</li>
</ul>
</li>
<li><a href="eventCalendar.html"><span>Calendar</span></a></li>
<li class="last"><a href="contact.html"><span>Contact</span></a></li>
</ul>
</nav>
</div>
<div class="cssmenu hideOnMobile">
<ul>
<li class="active"><a href="index.html"><span>Home</span></a></li>
<li><a href="garage.html"><span>Garage</span></a></li>
<li class="has-sub"><a href="join.html"><span>Connect</span></a>
<ul>
<li><a href="eventCalendar.html"><span>Event Calendar</span></a>
<ul>
<li><a href="service.html"><span>Sub Item 1</span></a></li>
<li class="last"><a href="service.html"><span>Sub Item 2</span></a></li>
</ul>
</li>
<li><a href="join.html"><span>Membership</span></a>
<ul>
<li><a href="service.html"><span>Sub Item 1</span></a></li>
<li class="last"><a href="service.html"><span>Sub Item 2</span></a></li>
</ul>
<li><a href="join.html"><span>Vendor Registration</span></a>
<li><a href="join.html"><span>Venue Sponsorship</span></a>
<li><a href="join.html"><span>Show Registration</span></a>
</li>
</ul>
</li>
<li><a href="eventCalendar.html"><span>Calendar</span></a></li>
<li class="last"><a href="contact.html"><span>Contact</span></a></li>
</ul>
</div>
<div class="clear"> </div>
</div>
</div>
</div>
</div>
</body>
</html>
CSS：
html {
height: 100%;
}
body {
font-family: Arial, Geneva,Helvetica, sans-serif;
font-size: 100%;
height: 100%;
}
.wrap{
margin:0 auto;
width:80%;
/*overflow: hidden;*/
}
.wrapper{
padding-top: 0;
padding-right: 4%;
padding-bottom: 0;
padding-left: 4%;
/*overflow: hidden;*/
position: relative;
}
/*start header */
.h_bg{
border-bottom: 8px solid #E6E6E6;
background-color: #161616;
}
.header{
padding: 2% 0;
position: relative;
}
.logo{
float: left;
}
.hideOnDesktop {
display: none;
}
.spacer {
background: #161616;
height: auto;
position: absolute;
top: 0;
right: 0;
}
.cssmenu {
position: absolute;
bottom: 0;
right: 0;
float: right;
}
.cssmenu > ul > li {
display:inline-block;
position: relative;
background: #f6f6f6; /* Old browsers */
background: -moz-linear-gradient(top, #f6f6f6 1%, #f0f0f0 19%, #efefef 39%, #ededed 59%, #dddddd 98%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(1%,#f6f6f6), color-stop(19%,#f0f0f0), color-stop(39%,#efefef), color-stop(59%,#ededed), color-stop(98%,#dddddd)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #f6f6f6 1%,#f0f0f0 19%,#efefef 39%,#ededed 59%,#dddddd 98%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #f6f6f6 1%,#f0f0f0 19%,#efefef 39%,#ededed 59%,#dddddd 98%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #f6f6f6 1%,#f0f0f0 19%,#efefef 39%,#ededed 59%,#dddddd 98%); /* IE10+ */
background: linear-gradient(to bottom, #f6f6f6 1%,#f0f0f0 19%,#efefef 39%,#ededed 59%,#dddddd 98%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#f6f6f6', endColorstr='#dddddd',GradientType=0 ); /* IE6-9 */
}
.cssmenu > ul > li.active a{
color: #ffffff;
background: #9d9d9d; /* Old browsers */
background: -moz-linear-gradient(top, #9d9d9d 5%, #8d8d8d 40%, #7d7d7d 68%, #6d6d6d 82%, #5d5d5d 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(5%,#9d9d9d), color-stop(40%,#8d8d8d), color-stop(68%,#7d7d7d), color-stop(82%,#6d6d6d), color-stop(100%,#5d5d5d)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* IE10+ */
background: linear-gradient(to bottom, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#9d9d9d', endColorstr='#5d5d5d',GradientType=0 ); /* IE6-9 */
}
.cssmenu > ul > li span img {
vertical-align: middle;
}
.cssmenu > ul > li > a {
display: block;
font-family: 'Julius Sans One', sans-serif;
font-size: 1em;
color: #161616;
line-height: 3.8em;
padding: 14px 24px;
-webkit-transition: color .15s;
-moz-transition: color .15s;
-o-transition: color .15s;
transition: color .15s;
}
.cssmenu > ul > li > a:hover {
-webkit-transition: 0.9s;
-moz-transition: 0.9s;
-o-transition: 0.9s;
transition: 0.9s;
color: #ffffff;
background: #9d9d9d; /* Old browsers */
background: -moz-linear-gradient(top, #9d9d9d 5%, #8d8d8d 40%, #7d7d7d 68%, #6d6d6d 82%, #5d5d5d 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(5%,#9d9d9d), color-stop(40%,#8d8d8d), color-stop(68%,#7d7d7d), color-stop(82%,#6d6d6d), color-stop(100%,#5d5d5d)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* IE10+ */
background: linear-gradient(to bottom, #9d9d9d 5%,#8d8d8d 40%,#7d7d7d 68%,#6d6d6d 82%,#5d5d5d 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#9d9d9d', endColorstr='#5d5d5d',GradientType=0 ); /* IE6-9 */
}
.cssmenu > ul > li > ul {
font-family: 'Julius Sans One', sans-serif;
z-index: 999;
opacity: 0;
visibility: hidden;
padding: 8px;
background: #5C5C5C;
color:#fff;
text-align: left;
position: absolute;
top: 55px;
left: 50%;
margin-top: 34px;
margin-left: -90px;
width: 180px;
-webkit-transition: all .3s .1s;
-moz-transition: all .3s .1s;
-o-transition: all .3s .1s;
transition: all .3s .1s;
}
.cssmenu > ul > li:hover > ul {
display: block;
opacity: 1;
top: 65px;
visibility: visible;
}
.cssmenu > ul > li > ul:before {
content: '';
display: block;
border-color: transparent transparent #5C5C5C transparent;
border-style: solid;
border-width: 10px;
position: absolute;
top: -20px;
left: 50%;
margin-left: -10px;
}
.cssmenu > ul ul > li {
position: relative;
}
.cssmenu ul ul a {
color: #ffffff;
font-family: 'Julius Sans One', sans-serif;
font-size: 13px;
background: #5C5C5C;
padding: 8px;
display: block;
-webkit-transition: background-color 0.1s;
-moz-transition: background-color 0.1s;
-o-transition: background-color 0.1s;
transition: background-color 0.1s;
}
.cssmenu ul ul a:hover {
background-color: #f0f0f0;
}
.cssmenu ul ul ul {
visibility: hidden;
opacity: 0;
position: absolute;
top: -16px;
left: 206px;
padding: 8px;
background-color: #fafafa;
text-align: left;
width: 160px;
-webkit-transition: all .3s;
-moz-transition: all .3s;
-o-transition: all .3s;
transition: all .3s;
}
.cssmenu ul ul > li:hover > ul {
opacity: 1;
left: 190px;
visibility: visible;
}
.cssmenu ul ul a:hover {
background: #4F4E4E;
color: #f0f0f0;
}
.mHeader a {
background: center center no-repeat transparent;
background-image: url( data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABkAAAAZCAYAAADE6YVjAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAADhJREFUeNpi/P//PwOtARMDHQBdLGFBYtMq3BiHT3DRPU4YR4NrNAmPJuHRJDyahEeT8Ii3BCDAAF0WBj5Er5idAAAAAElFTkSuQmCC );
display: block;
/*width: 40px;
height: 40px;
position: absolute;
top: 0;
left: 10px;
}