<!--
function checkform ( form )
{
  if (form.instructor.value == "") {
    alert( "Please enter your full name" );
    form.instructor.focus();
    return false ;
  }
  if (form.email.value == "") {
    alert( "Please enter your email address." );
    form.email.focus();
    return false ;
  }
  if (form.time.value == "") {
    alert( "Please enter the time period of your reservation" );
    form.time.focus();
    return false ;
  }
  if (form.classname.value == "") {
    alert( "Please enter your class name or event title" );
    form.classname.focus();
    return false ;
  }
  
  return true ;
}
//-->