ASP.NET Web Parts: Drag and Drop Support in Non-IE Browsers
I have been using web parts on my site since ASP.NET 2.0 came out. Dragging and dropping web parts works great in Internet Explorer, but it doesn’t work at all in Firefox, Chrome, or Safari. I recently upgraded the site to ASP.NET 3.5 SP1, but I am still unable to drag and drop web parts in non-IE browsers.