how to handle javascript alert in selenium webdriver?

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;


public class testJavascriptAlert {


	public static void main(String[] args) throws InterruptedException {
		WebDriver myTestDriver = new FirefoxDriver();
		myTestDriver.get("http://tinyurl.com/cqpzwnl");
		myTestDriver.manage().window().maximize();
		myTestDriver.manage().timeouts().implicitlyWait(10,TimeUnit.SECONDS);

			Thread.sleep(1000L);
			myTestDriver.switchTo().alert().accept();

	        myTestDriver.close();

	}

}