dragstart, but there are no correlatives either in other browsers or in the specifications. Simply put, what you see is the result of a continuous mapping and tracking of the mouse coordinates on the screen, combined with other mouse events, such as
For that reason, drag and drop is not supposed to work in all possible circumstances. For example, Blogger uses this technique to rearrange blog templates. In certain cases and browsers, it doesn't work as it should. And the final effect on a Blogger user is only one: frustration. I know that drag and drop is certainly a nice touch on a site, but you should always bear in mind how this feature will be perceived by your users and, to a less extent, by browsers.