(function() {
    var logEl = document.getElementById('event-log');
    function log(msg) {
        var d = document.createElement('div');
        d.className = 'pkg-log-entry';
        d.textContent = new Date().toLocaleTimeString() + ' ' + msg;
        logEl.appendChild(d);
        logEl.scrollTop = logEl.scrollHeight;
    }
    new MultipleUpload('#demo', {
        uploadUrl: '/api/upload',
        multiple: true,
        onDragEnter: function() { log('dragEnter'); },
        onDragLeave: function() { log('dragLeave'); },
        onDrop: function(files) { log('drop: ' + (files.length || 'event') + ' item(s)'); }
    });
})();