anchor.diff:  <link href="<c:url value='/css/stylesheet.css'/>" rel="stylesheet">
   </head>
   
  +
   <body>
   	<h1>Registre um requisito!</h1>
   
   	<select id="mySelect" onchange="myFunction()">
  +		<option value="nenhum">Nenhum
   		<option value="generico">Genérico
   		<option value="historia">História de Usuário
   		<option value="casodeUso">Caso de Uso
  
positive.code: 		</form>
  	</div>
  
  	<div id="historia">
  		<form action="registerRequirement" method="POST">
  			historia : <input name="requirement.title" placeholder="Título"
  				type="text"> Descrição : <input
  
negative.code: 		function myFunction() {
  			var x = document.getElementById("mySelect").value;
  			if (x == "generico") {
  				document.getElementById("formGenerico").setAttribute('style','visibility:visible');
  				document.getElementById("formHistoria").setAttribute('style','visibility:hidden');
  				document.getElementById("formCasoDeUso").setAttribute('style','visibility:hidden');
  			} else if (x == "historia"){
  				document.getElementById("formHistoria").setAttribute('style','visibility:visible');
  				document.getElementById("formGenerico").setAttribute('style','visibility:hidden');
  				document.getElementById("formCasoDeUso").setAttribute('style','visibility:hidden');
  			} else if (x == "casodeUso"){
  				document.getElementById("formCasoDeUso").setAttribute('style','visibility:visible');
  				document.getElementById("formGenerico").setAttribute('style','visibility:hidden');
  				document.getElementById("formHistoria").setAttribute('style','visibility:hidden');
  			} else {
  				document.getElementById("formGenerico").setAttribute('style','visibility:hidden');
  				document.getElementById("formHistoria").setAttribute('style','visibility:hidden');
  				document.getElementById("formCasoDeUso").setAttribute('style','visibility:hidden');
  				
  			}
  
  		}
  	</script>
  
  	<div id="formGenerico" style="visibility:hidden">
  		<form action="registerRequirement" method="POST">
  			generico : <input name="requirement.title" placeholder="Título"
  				type="text"> Descrição : <input
  