code: @Override
  	public Object executeJavaScript(String code) throws CrawljaxException {
  		try {
  			JavascriptExecutor js = (JavascriptExecutor) browser;
  			return js.executeScript(code);
  		} catch (WebDriverException e) {
  			throwIfConnectionException(e);
  			throw new CrawljaxException(e);
  		}
  	}
docs: Execute JavaScript in the browser.
  
  @param code The code to execute.
  @return The return value of the JavaScript.
  @throws CrawljaxException when javascript execution failed.