links:

https://github.com/enyo/dropzone/wiki/FAQ

http://stackoverflow.com/questions/17872417/integrating-dropzone-js-into-existing-html-form-with-other-fields

https://github.com/enyo/dropzone/wiki/Combine-normal-form-with-Dropzone

http://www.acnenomor.com/1916426p1/combine-normal-form-with-dropzone

http://stackoverflow.com/questions/25377744/configure-dropzone-display-area

When you create it in code:
http://stackoverflow.com/questions/18032132/dropzone-image-upload-options-not-working