Top menu bootstrap

by Zonedark

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<nav class="navbar navbar-default nav">
    <div class="container-fluid">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"> <span class="sr-only">Toggle navigation</span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>

            </button> <a class="navbar-brand" href="#">Brand</a>

        </div>
        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a>

                </li>
                <li><a href="#">Link</a>

                </li>
                <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>

                    <ul class="dropdown-menu">
                        <li><a href="#">Action</a>

                        </li>
                        <li><a href="#">Another action</a>

                        </li>
                        <li><a href="#">Something else here</a>

                        </li>
                        <li role="separator" class="divider"></li>
                        <li><a href="#">Separated link</a>

                        </li>
                        <li role="separator" class="divider"></li>
                   ...

CSS

body {
    background-color: #333;
    color: #999;
    font: 12px/1.4em Arial, sans-serif;
}
#wrap {
    margin: 10px auto;
    background: #666;
    padding: 10px;
    width: 700px;
}
#header {
    background-color: #666;
    color: #FFF;
}
#logo {
    font-size: 30px;
    line-height: 40px;
    padding: 5px;
}
#navWrap {
    height: 30px;
}
#nav {
    padding: 5px;
    background: #999;
}
#nav ul {
    margin: 0;
    padding: 0;
}
#nav li {
    float: left;
    padding: 3px 8px;
    background-color: #FFF;
    margin: 0 10px 0 0;
    color: #F00;
    list-style-type: none;
}
#nav li a {
    color: #F00;
    text-decoration: none;
}
#nav li a:hover {
    text-decoration: underline;
}
br.clearLeft {
    clear: left;
}
​

JavaScript

$(function () {
    // Stick the #nav to the top of the window
    var nav = $('nav');
    var navHomeY  nav.offset().top;
    var isFixed = false;
    var $w = $(window);
    $w.scroll(function () {
        alert('pop');
        var scrollTop = $w.scrollTop();
        var shouldBeFixed = scrollTop > navHomeY;
        if (shouldBeFixed && !isFixed) {
            nav.css({
                position: 'fixed',
                top: 0,
                left: nav.offset().left,
                width: nav.width()
            });
            isFixed = true;
        } else if (!shouldBeFixed && isFixed) {
            nav.css({
                position: 'static'
            });
            isFixed = false;
        }
    });
});