// This function inserts a field into a form.  The field is inserted via 
// javascript statements so that an automated script cannot see.  The
// the perl script that handles the form inputs can then verify that 
// the field is present.  If the field is not present, then the script 
// quietly ignores the form submission.
function insert_verification_field()
{
	document.write('<input type="hidden" name="verification" value="verification">');
}