 <p>It's a Webkit-specific property:</p> <blockquote> <h2>CSS property: <code>-webkit-user-drag</code></h2> <h3>Description</h3> <p>Specifies that an entire element should be draggable instead of its contents.</p> <h3>Syntax</h3> <pre><code>-webkit-user-drag: auto | element | none; </code></pre> <h3>Values</h3> <ul> <li><p><code>auto</code> The default dragging behavior is used.</p></li> <li><p><code>element</code> The entire element is draggable instead of its contents.</p></li> <li><p><code>none</code> The element cannot be dragged at all.</p></li> </ul> </blockquote> <p>It's supported by Chrome 1-17 and Safari 3-5.1: <a href="http://www.browsersupport.net/CSS/-webkit-user-drag">http://www.browsersupport.net/CSS/-webkit-user-drag</a></p>