There are numerous WYSIWYG editors available on the internet, but I\'m yet to find one that implements some form of drag-n-drop implementation.
It is easy to create
Currently an HTML5 API is being developed to do this, but unfortunately IE doesn't support it. Edit: Apparently IE actually does support drag and drop, but I'm not very familiar with how it works. Try Googling "IE drag and drop".
Try looking at these sites: