x
<html><body style="background:#f3f3f3 url('img_tree.png');"><h1>HTML Style Object</h1><h2>The backgroundRepeat Property</h2><button type="button" onclick="repeatVert()">Repeat background image only vertically</button><button type="button" onclick="repeatHori()">Repeat background image only horizontally</button><script>function repeatVert() { document.body.style.backgroundRepeat = "repeat-y";}function repeatHori() { document.body.style.backgroundRepeat = "repeat-x";}</script></body></html>