SolmetraUploader.setEventHandler('myEvent');
function myEvent (instance_id, event_id, data) {
  	//alert('EVENT: ' + event_id);
   	elem = document.getElementById("submit");
		if(event_id=='ready'){
			//elem.value = 'SELECT FILE';
   		//elem.disabled = true;
   	}
   	if(event_id=='selected'){
   		//elem.value = 'UPLOAD FILE';
   		//elem.disabled = false;
   	}
   	if(event_id=='done'){
   		//elem.value = 'DONE - SUBMIT FORM';
   		//elem.disabled = false;
   	}
}