Enable / Disable Events

(function() {
 var logEl = document.getElementById('log');
 function log(m) { var d = document.createElement('div'); d.className='pkg-log-entry'; d.textContent=m; logEl.appendChild(d); logEl.scrollTop=logEl.scrollHeight; }
 var uploader = new MultipleUpload('#demo', {
 uploadUrl: '/api/upload',
 multiple: true,
 onEnable: function() { log('Uploader ENABLED'); },
 onDisable: function() { log('Uploader DISABLED'); }
 });
 document.getElementById('toggle-btn').addEventListener('click', function() {
 if (uploader.isEnabled()) uploader.disable();
 else uploader.enable();
 });
})();