Returns all children by name or indexes
@param {Object} name Element name(s) or indexes (<code>String</code>,
<code>Array</code>, <code>Number</code>)
@returns {Array}
function(name) {
			if (!_.isArray(name))
				name = [name];
			
			// split names and indexes
			var names = [], indexes = [];
			_.each(name, function(item) {
				if (_.isString(item))
					names.push(item);
				else if (_.isNumber(item))
					indexes.push(item);
			});
			
			return _.filter(this.list(), function(attribute, i) {
				return _.include(indexes, i) || _.include(names, attribute.name());
			});
		}