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This library smooths out the differences between the different browser implementations of the HTML5 Drag and Drop module. It is not a polyfill

This script smooths out the differences between the various browser implementations of the HTML5 Drag and Drop Module. It currently works with Firefox 3.5+, Chrome 3.0+, Safari 3.0+, Opera 12 and Internet Explorer 5.0 (Note: that is not a typo -- HTML5 Drag and Drop is based on work done by Microsoft in 1999).

Note that this script is not a polyfill. It just evens out the differences in browser implementations.

More information can be found at:

http://www.useragentman.com/blog/2010/01/10/cross-browser-html5-drag-and-drop/