Drag and Drop polyfill?

I'm looking for a tool that will allow me to utilize native HTML5 drag-n-drop, as well as fill in support for past browsers.

Does such a thing exi开发者_运维问答st? Modernizr's page (https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills) lists nothing.

What older browsers do you want to support? http://caniuse.com/#feat=dragndrop Says you got support everywhere except Opera.

Modernizr now has Drag drop shim by Tim Ruffles;

Bernardo Castilho has a polyfill that translates touch events on mobile into drag events