Untitled

<style type="text/css">
        #boton{
            width: 50px;
            height: 30px;
            display: block;
            margin:30px;
        }

        img{
            width: 300px;
            height: 200px;
            margin:30px;
        }
    </style>

    <script type="text/javascript">
        var boton = document.getElementById('boton');
        boton.onclick = function(){
            var imagen = document.getElementById('foto');
            imagen.style.display ='none';
        }
    </script>
</head>
<body>
    <button id="boton">Click</button>
    <img src="header.jpg" id="foto">
</body>