<!DOCTYPE html>
<html>
<body>
<h3>A demonstration of how to access a HEADER element</h3>
<article>
<header id="myHeader">
<h3>Internet Explorer 9</h3>
</header>
<p>Windows Internet Explorer 9 (abbreviated as IE9) was released to
the public on March 14, 2011 at 21:00 PDT.....</p>
</article>
<p>Click the button to set the color of the header element to red.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
var x = document.getElementById("myHeader");
x.style.color = "red";
}
</script>
</body>
</html>