I have successfully added custom content type and added necessary aspect for the flash upload UI in Share. I am trying to figure out if the same can be done for the drag and drop UI in Share. For the flash upload I could add multiple dropdown by just adding it to the flash-upload.get.js file and adding a custom webscript call in the flash-upload-min.js file. But the dnd-upload-min.js is less readable and was wondering if it will be even feasible?