Use JavaScript to change the image source from "scream.png" to "smiley.gif".
<body>
<img id="demo" src="scream.png">
<script>
@(8).getElementById("demo").@(3) = "smiley.gif";
</script>
</body>
<body>
<img id="demo" src="scream.png">
<script>
document.getElementById("demo").src = "smiley.gif";
</script>
</body>