How would I make Uploadify (http://www.uploadify.com/demos/) work with drag and drop files?
I’m trying to create exactly this using Uploadify: 
I just don’t know how to start?
I assume that I will have to create instance using .uploadify() and I will have to use .uploadifyUpload() (triggers the file upload) for each dropped image in a loop. But how to do that to be cross-browser compatible? I already have working “select files” button that selects them and shows multiple uploading bars below.
Uploadify is a jQuery plugin which is based on Flash runtime so Drag&Drop is not supported. Yet.
If you wish to make a drag&drop, you have to use Plupload and use HTML5, Gears and BrowserPlus as runtime (HTML5 won’t work on IE).
See the table from Plupload and you will see the features for each runtime.