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<html><style>body { background: #f3f3f3 url('img_tree.png') no-repeat right top;}</style><body><h1>HTML Style Object</h1><h2>The backgroundAttachment Property</h2><p>Scroll the page before and after you have clicked the button.</p><p>Try to to resize the window if the scrollbar is not available.</p><button onclick="myFunction()">Set background image to be fixed</button><br> <script>function myFunction() { document.body.style.backgroundAttachment = "fixed";}</script><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..