Community Add-Ons

Show or Hide Yahoo Messenger.
Tested in osCOmmerce 2.2rc2a

Backup first before use this addon.
Use at own risk.

This addon required Yahoo Messenger addon installed.
Find it here : http://addons.oscommerce.com/info/475

1) database insert (create a configuration key right above your store name in admin):

INSERT INTO configuration (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) VALUES ('Show or Hide Yahoo Messenger', 'YAHOO_MESSENGER', 'Show', 'Set to Show if you want to show Yahoo Messenger, set to Hide if you want to hide Yahoo Messenger', '1', '0', 'tep_cfg_select_option(array('Show', 'Hide'), ', now());

2) open file in catalog/includes/column_right.php
find :
require(DIR_WS_BOXES . 'messenger.php');

replace with:
//Show or Hide Yahoo Messenger
if (YAHOO_MESSENGER == 'Show') {

require(DIR_WS_BOXES . 'messenger.php');
}else {
}

enjoy!