Explorer 10 (currently in beta) will provide support, and Opera (who were involved in writing the fullscreen draft spec ) are likely not far behind. Step 1: Decide What to Fullscreen First, you'll need to create a bit of HTML, and decide what element to blow up to fullscreen when the time comes. Here's a little bit of code containing an image which we'll eventually take to full-screen. Step 2: Tell the Browser To Go Fullscreen You'll notice that in the above code, our fullscreen button doesn't do anything yet. We'll need to write some JavaScript which will take the image into fullscreen mode. I'll explain what everything does in the code itself. Click Me To Go Fullscreen! (For real) Example code: &lt;script type="text/javascript"&gt; function goFullscreen(id) { // Get the element that we want to take into fullscreen mode var element = document.getElementById(id); // These function will not exist in the browsers that don't support fullscreen mode yet, // so we'll have to check to see if they're available before calling them. if (element.mozRequestFullScreen) { // This is how to go into fullscren mode in Firefox // Note the "moz" prefix, which is short for Mozilla. element.mozRequestFullScreen(); } else if (element.webkitRequestFullScreen) { // This is how to go into fullscreen mode in Chrome and Safari // Both of those browsers are based on the Webkit project, hence the same prefix. element.webkitRequestFullScreen(); } // Hooray, now we're in fullscreen mode! } &lt;/script&gt; &lt;img class="video_player" src="image.jpg" id="player"&gt;&lt;/img&gt; &lt;button onclick="goFullscreen('player'); return false"&gt;Click Me