file_name');
	var isExist = false;

	if (list.length>0) {
		for (var loop=0; loop<list.length; loop++) {
			if (list[loop].value == newOne.value) {
				isExist = true;
				break;
			}
		}
	}

	if (isExist)
		if (!confirm('This config name already exists, do you want to overwrite it?')) {
			e.preventDefault();
			newOne.value = '';
		}

});

EventUtil.addHandler(document.getElementById('upload-submit'), 'click', function(e){

	var list = document.getElementsByName('config_file');
	var newOne = document.getE