This lab will count as 5 pts extra credit towards Project 2
For this lab you will write a form validation function that
will validate that all fields of the form are given. Display to the
user an error message about missing fields or invalid entries
and a red asterisk next to the corresponding input field.
Otherwise, access
the document's wrapper's innerHTML and display "Thank You".
Use the given example as a starting point and complete the 'validateForm'
function.