function do_onfocus_action( fieldname ){

	// change presentation of the field to indicate it received focus
	fieldname.className = 'field_has_focus';

	// clear the field if it still had its default value
	if  (
				( ( fieldname.name == 'last_name' ) && ( fieldname.value == 'last name' ) ) ||
				( ( fieldname.name == 'last_name' ) && ( fieldname.value == 'last name' ) )
			)
		fieldname.value = '';
} 

function do_onblur_action( fieldname ){

	// change presentation of the field to indicate it lost focus
	fieldname.className = 'field_lost_focus';

	// restore the default value for the field if nothing got entered
	if  ( ( fieldname.name == 'last_name' ) && ( fieldname.value == '' ) )
		fieldname.value = 'last name';
	if  ( ( fieldname.name == 'last_name' ) && ( fieldname.value == '' ) )
		fieldname.value = 'last name';
}