kevinn/DEMO: Floating menu nav

## DEMO: Floating menu nav
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <title>Scollmenu Demo</title>
  <link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/normalize/3.0.1/normalize.min.css">
  <style type="text/css" media="screen">
    * {
      -webkit-box-sizing: border-box;
      -moz-box-sizing: border-box;
      box-sizing: border-box;
    }

    body {
      font-family: Helvetica, Arial, sans-serif;
      font-size: 14px;
      line-height: 1.3;
      color: #222;
      background-color: #fff;
    }

    h1, h2, h3 { margin: 0; padding: 0; }

    ul {
      margin: 0; padding: 0;
      list-style: none;
    }

    li {
      margin: 0; padding: 0;
      color: #fff;
    }

    li a {
      color: #fff;
    }

    header {
      margin-bottom: 20px;
      padding: 10px;
      color: #fff;
      background-color: #222;
      overflow: hidden;
    }

    header h1 { float: left; }
    header ul { float: right; }
    header li { float: left; padding: 10px; }

    section { padding: 2em; }
    section:nth-child(odd) { background-color: #efefef; }


    #floatmenu {
      position: fixed;
      bottom: 30px; right: 30px;
      padding: 15px;
      width: 200px; height: 130px;
      color: #fff;
      background-color: rgba(100,0,0,0.8);
      opacity: 0;
      z-index: 50;
      -webkit-transition: all 500ms ease-out;
      -moz-transition: all 500ms ease-out;
      transition: all 500ms ease-out;
      overflow: hidden;
    }

    #floatmenu ul {
      display: block;
      margin: 0; padding: 0;
      list-style: none;
    }

    #floatmenu li {
      padding: 2px 20px;
      white-space: nowrap;
    }

    #floatmenu.closed {
      border-radius: 1em;
      width: 0; height: 0;
    }

    #floatmenu.closed:hover {
      cursor: pointer;
    }

    #floatmenu.closed:after {
      content: " ";
      position: absolute;
      top: 50%; left: 50%;
      margin-top: -8px;
      margin-left: -5px;
      z-index: 10;

      display: block;
      width: 0; height: 0;
      border: 5px solid transparent;
      border-bottom-color: #fff;
    }

    #floatmenu.closed ul {
    }


  </style>
</head>
<body>
  <header>
    <h1>Scollmenu Demo</h1>
    <nav>
      <ul>
        <li><a href="#nav1" title="">Nav1</a></li>
        <li><a href="#nav2" title="">Nav2</a></li>
        <li><a href="#nav3" title="">Nav3</a></li>
        <li><a href="#nav4" title="">Nav4</a></li>
      </ul>
    </nav>
  </header>
  <section id="nav1">
    <h2>Some title</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
  </section>
  <section id="nav2">
    <h2>Some title</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
  </section>
  <section id="nav3">
    <h2>Some title</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

    <h3>Some title</h3>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
  </section>
  <section id="nav4" style="height: 600px;">
    <h2>Some title</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
  </section>
  <div id="floatmenu" class="closed">
    <ul>
      <li><a href="#nav1" title="">Link to title #Nav1</a></li>
      <li><a href="#nav2" title="">Link to title #Nav2</a></li>
      <li><a href="#nav3" title="">Link to title #Nav3</a></li>
      <li><a href="#nav4" title="">Link to title #Nav4</a></li>
    </ul>
  </div>

  <script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
  <script>
    // debounce http://davidwalsh.name/javascript-debounce-function
    function debounce(a,b,c){var d;return function(){var e=this,f=arguments;clearTimeout(d),d=setTimeout(function(){d=null,c||a.apply(e,f)},b),c&&!d&&a.apply(e,f)}}

    var scrollChk = debounce(function() {

      // scrolling a few pixels, show the lower right menu
      var $scroll = $(document).scrollTop();

      if ($scroll >= '80') {
        $('#floatmenu').animate({
          opacity: 1
        },'fast');
      } else {
        $('#floatmenu').animate({
          opacity: 0
        },'fast');
      }

      console.log($scroll);

    },350);

    window.addEventListener('scroll', scrollChk);

    $(function(){

      //floating menu trigger
      $('#floatmenu').on('click',function(e){
        var $this = $(this);

        $this.removeClass('closed');

        setTimeout(function(){
          $this.addClass('closed');
        },4500);

      });
    });
  </script>
</body>
</html>