<!DOCTYPE html>
<html>
<head>
<style>
body {
background: #f3f3f3 url('img_tree.png') no-repeat fixed right top;
}
</style>
</head>
<body>
<h1>Hello World!</h1>
<p><b>Tip:</b> Try to to resize the window if the scrollbar is not available.</p>
<p>Click the button to toggle between scroll and fixed position.</p>
<p><b>Tip:</b> Scroll the page before and after you have clicked the button.</p>
<button id="toggle" onclick="myFunction();">Set bg image to scroll</button>
<p>Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
Some text to enable scrolling..
<br><br><br><br>
</p>
<script>
function myFunction() {
var x = document.body.style.backgroundAttachment;
document.getElementById("toggle").innerHTML=(x=="scroll")? "Set bg image to scroll!":"Set bg image to fixed!";
document.body.style.backgroundAttachment=(x=="scroll")? "fixed":"scroll";
}
</script>
</body>
</html>