Question: A palindrome is a number or a text phrase that reads the same backward as forward. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a script that reads in a five-digit integer and determines whether it is a palindrome. If the number is not five digits long, output XHTML text that displays an alert dialog indicating the problem to the user. When the user dismisses the alert dialog, allow the user to enter a new value.