A Dynamic Web page example


<body>
 <h1 style="color:red;background:yellow">Heading 1</h1>
 <h2>Heading 2</h2>
</body>
<script type="text/ecmascript"><!--
 function changeStyle(element1, element2) {
     element1.style.setProperty("color",
                element2.style.getProperty("color"), "");
 }
--></script>