Neil Deakin has posted a development update about the inclusion of the HTML5 drag and drop API in Mozilla nightly builds. “This is the API that IE and Safari have supported for a while. Now Firefox will support it as well so you can create content in your web pages that can be dragged and dropped elsewhere. The same API is also used for Firefox extensions and XUL applications.” For more information, including examples about how to make things draggable, see Neil’s weblog post. Drag and drop documentation is available at the Mozilla Developer Center.