function render() {
					if (state) {
						$(elm).append(
							'<div class="' + classPrefix + 'throbber' + (inline ? ' ' + classPrefix + 'throbber-inline' : '') + '"></div>'
						);

						if (callback) {
							callback();
						}
					}
			}
Shows the throbber.

@method show
@param {Number} [time] Time to wait before showing.
@param {function} [callback] Optional callback to execute when the throbber is shown.
@return {tinymce.ui.Throbber} Current throbber instance.