Unable to click on object in Banking Netbanking site - selenium

Question

Below Is the site page
I'm trying to click on Continue to Netbanking button. But I am unable to do that. I have used xpath but its not working. Here is xpath which I've tried :
driver.findElement(By.xpath(".//*[#id='wrapper']/div[6]/a/img")).click();
Steps:
Open URl http://www.hdfcbank.com
Click on Login button on website. New popup will get open.
Click on "Continue on Netbanking". THIS IS NOT WORKING
Here is code:
driver.findElement(By.id("loginsubmit")).click();
Thread.sleep(3000);
Set<String> set = driver.getWindowHandles();
Iterator<String> it = set.iterator();
System.out.println(set.size());
for( String windowTab : set){
if(!windowTab.equalsIgnoreCase(MainWindow)){
driver.switchTo().window(it.next());
driver.manage().window().maximize();
String Wdinw2 = driver.getWindowHandle();
Thread.sleep(10000);
System.out.println(driver.getTitle());
driver.findElement(By.xpath(".//*[#id='wrapper']/div[6]/a/img")).click();
break;
}
}
Console :
Exception in thread "main" org.openqa.selenium.NoSuchElementException:
no such element: Unable to locate element:
{"method":"xpath","selector":".//*[#id='wrapper']/div[6]/a/img"}

Answer 1

Try to use below code and let me know the result:
String winHandleBefore = driver.getWindowHandle();
for(String winHandle : driver.getWindowHandles()){
driver.switchTo().window(winHandle);}
WebDriverWait wait = new WebDriverWait(driver, 15);
wait.until(ExpectedConditions.elementToBeClickable(By.cssSelector("img[alt='continue']"))).click();
To switch back to main window (if you need):
driver.switchTo().window(winHandleBefore);