see link (w3c valid)

http://validator.w3.org/check?uri=http%3A%2F%2Fsulley.cah.ucf.edu%2F~bl537804%2Fdig4530c%2Fassignments%2Fga04%2Fhome.php&charset=%28detect+automatically%29&doctype=Inline&group=0&user-agent=W3C_Validator%2F1.3+http%3A%2F%2Fvalidator.w3.org%2Fservices