0
Good, I have a problem in the code, I intend to press a Menu button that hides all DIV except one, however it is not working, someone can help me please?
@import url(http://fonts.googleapis.com/css?family=Raleway);
#cssmenu,
#cssmenu ul,
#cssmenu ul li,
#cssmenu ul li a,
#cssmenu #menu-button {
  margin: 0;
  padding: 0;
  border: 0;
  list-style: none;
  line-height: 1;
  display: block;
  position: relative;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
#cssmenu:after,
#cssmenu > ul:after {
  content: ".";
  display: block;
  clear: both;
  visibility: hidden;
  line-height: 0;
  height: 0;
}
#cssmenu #menu-button {
  display: none;
}
#cssmenu {
  width: 84.8%;
  font-family: Raleway, sans-serif;
  line-height: 1;
}
#cssmenu > ul {
  background: #3db2e1;
}
#cssmenu > ul > li {
  float: left;
  -webkit-perspective: 1000px;
  -moz-perspective: 1000px;
  perspective: 1000px;
}
#cssmenu.align-center > ul {
  font-size: 0;
  text-align: center;
}
#cssmenu.align-center > ul > li {
  display: inline-block;
  float: none;
}
#cssmenu.align-right > ul > li {
  float: right;
}
#cssmenu > ul > li > a {
  padding: 16px 20px;
  font-size: 14px;
  color: #ffffff;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  background: #3db2e1;
  -webkit-transition: all .3s;
  -moz-transition: all .3s;
  -o-transition: all .3s;
  transition: all .3s;
  -webkit-transform-origin: 50% 0;
  -moz-transform-origin: 50% 0;
  transform-origin: 50% 0;
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  transform-style: preserve-3d;
}
#cssmenu > ul > li.active > a {
  color: #dff2fa;
}
#cssmenu > ul > li:hover > a,
#cssmenu > ul > li > a:hover {
  color: #dff2fa;
  -webkit-transform: rotateX(90deg) translateY(-23px);
  -moz-transform: rotateX(90deg) translateY(-23px);
  transform: rotateX(90deg) translateY(-23px);
  -ms-transform: none;
}
#cssmenu > ul > li > a::before {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: -1;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  padding: 16px 20px;
  color: #dff2fa;
  background: #19799f;
  content: attr(data-title);
  -webkit-transition: background 0.3s;
  -moz-transition: background 0.3s;
  transition: background 0.3s;
  -webkit-transform: rotateX(-90deg);
  -moz-transform: rotateX(-90deg);
  transform: rotateX(-90deg);
  -webkit-transform-origin: 50% 0;
  -moz-transform-origin: 50% 0;
  transform-origin: 50% 0;
  -ms-transform: translateY(- -18px);
}
#cssmenu > ul > li:hover > a::before,
#cssmenu > ul > li > a:hover::before {
  background: #3db2e1;
}
#cssmenu.small-screen {
  width: 100%;
}
#cssmenu.small-screen > ul,
#cssmenu.small-screen.align-center > ul {
  width: 100%;
  text-align: left;
}
#cssmenu.small-screen > ul > li,
#cssmenu.small-screen.align-center {
  float: none;
  display: block;
  border-top: 1px solid rgba(100, 100, 100, 0.1);
}
#cssmenu.small-screen > ul > li:hover > a,
#cssmenu.small-screen > ul > li > a:hover {
  color: #dff2fa;
  -webkit-transform: none;
  -moz-transform: none;
  transform: none;
  -ms-transform: none;
}
#cssmenu.small-screen > ul > li > a::before {
  display: none;
}
#cssmenu.small-screen #menu-button {
  display: block;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 14px;
  text-decoration: none;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: #3db2e1;
}
#cssmenu.small-screen #menu-button:after {
  content: "";
  position: absolute;
  right: 20px;
  top: 17px;
  display: block;
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
  border-top: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  width: 22px;
  height: 3px;
}
#cssmenu.small-screen #menu-button.menu-opened:after {
  border-top: 2px solid #dff2fa;
  border-bottom: 2px solid #dff2fa;
}
#cssmenu.small-screen #menu-button:before {
  content: "";
  position: absolute;
  right: 20px;
  top: 27px;
  display: block;
  width: 22px;
  height: 2px;
  background: #ffffff;
}
#cssmenu.small-screen #menu-button.menu-opened:before {
  background: #dff2fa;
}
video#bgvid {
position: fixed; right: 0; bottom: 0;
min-width: 100%; min-height: 100%;
width: auto; height: auto; z-index: -100;
}
html {
    position: relative;
    min-height: 100%;
}
footer {
    position: absolute;
    bottom: 0px;
	left: 10%;
    height: 10%;
    width: 80%;
	border: 0px solid #165480;
}
#cima{
	width: 99%;
	position: absolute;
	
}
#logo{
    width: 40%;
	position: absolute;
	left: 10%;
	top: 2%;
}
#sect1{
	border: 1px solid #165480;
	width: 80%;
	height: 75%;
	position: absolute;
	left: 10%;
	top: 15%;
	background-color: #eef9ff;
	background-repeat: no-repeat;
    background-size: 100% 100%;
}
#sect2{
	border: 1px solid #165480;
	width: 80%;
	height: 75%;
	position: absolute;
	left: 10%;
	top: 15%;
	background-color: #eef9ff;
	background-repeat: no-repeat;
    background-size: 100% 100%;
}
#sect3{
	border: 1px solid #165480;
	width: 80%;
	height: 75%;
	position: absolute;
	left: 10%;
	top: 15%;
	background-color: #eef9ff;
	background-repeat: no-repeat;
    background-size: 100% 100%;
}
#sect4{
	border: 1px solid #165480;
	width: 80%;
	height: 75%;
	position: absolute;
	left: 10%;
	top: 15%;
	background-color: #eef9ff;
	background-repeat: no-repeat;
    background-size: 100% 100%;
}
#sect5{
	border: 1px solid #165480;
	width: 80%;
	height: 75%;
	position: absolute;
	left: 10%;
	top: 15%;
	background-color: #eef9ff;
	background-repeat: no-repeat;
    background-size: 100% 100%;
}
	
#menu{
	position: absolute;
	left: 48%;
	top: 30px;
	width:50%;
}
body,td,th {
	font-size: 12px;
}
.sombra
{
text-shadow: 0.1em 0.1em 0.05em #333
}<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>MDG - Empresa</title>
   <meta charset='utf-8'>
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="stylesheet" href="mdg.css">
   <script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
   <script src="script.js"></script>
   <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script>
	$(document).ready(function(){
		$("li").click(function(event){
			var link = $(this);				
			if(link.attr("id").match("menuinicio"))
			$("#sect1").show("slow");
			$("#sect2").hide("slow");
			$("#sect3").hide("slow");
			$("#sect4").hide("slow");
			$("#sect5").hide("slow");
			else if(link.attr("id").match("menuempresa"))
			$("#sect2").show("slow");
			$("#sect1").hide("slow");
			$("#sect3").hide("slow");
			$("#sect4").hide("slow");
			$("#sect5").hide("slow");
			else if(link.attr("id").match("menuprodutos"))
			$("#sect3").show("slow");
			$("#sect1").hide("slow");
			$("#sect2").hide("slow");
			$("#sect4").hide("slow");
			$("#sect5").hide("slow");
			else if(link.attr("id").match("menuempresa"))
			$("#sect4").show();
			$("#sect1").hide();
			$("#sect2").hide();
			$("#sect3").hide();
			$("#sect5").hide();
			else
			$("#sect5").show("slow");
			$("#sect1").hide("slow");
			$("#sect2").hide("slow");
			$("#sect3").hide("slow");
			$("#sect4").hide("slow");
		});
	})
</script>
</head>
<body>
<video autoplay loop id="bgvid">
<source src="media/mdg.mp4" type="video/mp4">
</video>
<div id="cima">
<div id="logo">
<img src="media/logo.png" alt="MetalurgiaDulceGavina" title="MetalurgiaDulceGavina" width="199" height="73">
</div>
<div id="menu">
<div id='cssmenu'>
<ul>
   <li class='active'>
   <li id="menuinicio"><a href='#'>Inicio</a></li>
   <li id="menuempresa"><a href='#'>Empresa</a></li>
   <li id="menuprodutos"><a href='#'>Produtos</a></li>
   <li id="menunoticias"><a href='#'>Noticias</a></li>
   <li id="menucontacto"><a href='#'>Contactos</a></li>
</ul>
</div>
</div>
</div>
<div id="sect2"><p>2</p></div>
<div id="sect3"><p>3</p></div>
<div id="sect4"><p>4</p></div>
<div id="sect5"><p>5</p></div>
<div id="sect1"><p>1</p></div>
<footer align="center">
      <pre><small><strong><u>Copyright© 2015 MDG - Metalurgia Dulce Gavina, Unipessoal, Lda.</u></strong></small></pre>
      <pre class="sombra"><strong>Something</strong></pre>
</footer>
</body>
</html>