This part uses the database. Write a file named hw6b.htm. This file should create a form with a text field for a user to enter a customer ID. The form should also have a button. When the user clicks the button, an AJAX request is made to a file named hw6b.php. This file will take the customerid as a parameter, and produce a response that will consist of a JavaScript function call. If the customer id does not exist, the function call should be not_there(). If the customer id does exist, the function call should be there(), and there should have arguments that are all the fields of that customer. When hw6b.htm receives the response, it should display evaluate the function. The not_there() function should print an alert telling the user there was an error. The there() function should display the values of its arguments on the page.