$('#dropzone').filedrop({
	url: 'upload.php',				// upload handler, handles each file separately
	paramname: 'userfile',			// POST parameter name used on serverside to reference file
	data: { 
		param1: 'value1', 			// send POST variables
		param2: function(){
			return calculated_data; // calculate data at time of upload
		},
	},
	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;
			default:
				break;
		}
	},
	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
	},
	speedUpdated: function(i, file, speed) {
		// speed in kb/s
	}
});