$('#dropzone').filedrop({
	fallback_id: 'upload_button',   // an identifier of a standard file input element
	url: 'upload.php',				// upload handler, handles each file separately, can also be a function returning a url
	paramname: 'userfile',			// POST parameter name used on serverside to reference file
	withCredentials: true,			// make a cross-origin request with cookies
	data: {
		param1: 'value1', 			// send POST variables
		param2: function(){
			return calculated_data; // calculate data at time of upload
		},
	},
	headers: { 			// Send additional request headers
		'header': 'value'
	},
	error: function(err, file) {
		switch(err) {
			case 'BrowserNotSupported':
				alert('browser does not support html5 drag and drop')
				break;
			case 'TooManyFiles':
				// user uploaded more than 'maxfiles'
				break;
			case 'FileTooLarge':
				// program encountered a file whose size is greater than 'maxfilesize'
				// FileTooLarge also has access to the file which was too large
				// use file.name to reference the filename of the culprit file
				break;
		    case 'FileTypeNotAllowed':
		        // The file type is not in the specified list 'allowedfiletypes'
			default:
				break;
		}
	},
	allowedfiletypes: ['image/jpeg','image/png','image/gif'],	// filetypes allowed by Content-Type.  Empty array means no restrictions
	maxfiles: 25,
	maxfilesize: 20, 	// max file size in MBs
	dragOver: function() {
		// user dragging files over #dropzone
	},
	dragLeave: function() {
		// user dragging files out of #dropzone
	},
	docOver: function() {
		// user dragging files anywhere inside the browser document window
	},
	docLeave: function() {
		// user dragging files out of the browser document window
	},
	drop: function() {
		// user drops file
	},
	uploadStarted: function(i, file, len){
		// a file began uploading
		// i = index => 0, 1, 2, 3, 4 etc
		// file is the actual file of the index
		// len = total files user dropped
	},
	uploadFinished: function(i, file, response, time) {
		// response is the data you got back from server in JSON format.
	},
	progressUpdated: function(i, file, progress) {
		// this function is used for large files and updates intermittently
		// progress is the integer value of file being uploaded percentage to completion
	},
	globalProgressUpdated: function(progress) {
		// progress for all the files uploaded on the current instance (percentage)
		// ex: $('#progress div').width(progress+"%");
	},
	speedUpdated: function(i, file, speed) {
		// speed in kb/s
	},
	rename: function(name) {
		// name in string format
		// must return alternate name as string
	},
	beforeEach: function(file) {
		// file is a file object
		// return false to cancel upload
	},
	beforeSend: function(file, i, done) {
		// file is a file object
		// i is the file index
		// call done() to start the upload
	},
	afterAll: function() {
		// runs after all files have been uploaded or otherwise dealt with
	}
});

maxfiles: 10    // Limit the total number of uploads possible - default behaviour
queuefiles: 2   // Control how many uploads are attempted in parallel (ignores maxfiles setting)