why blacklist client side image maps?

Because the complexity of the HTML involved in image maps.

This filter should not only allow you to use a particular HTML element, but it also needs to make sure you're using its syntax correctly, which is necessary for security reasons.

Image maps involve the use of elements IMG, MAP and AREA. Too complex to parse and validate, we didn't need that feature, and also it is not too common to see this kind of features in WYSIWYG editors.

I'm a site admin and i need to add image maps into content that is made with WYSIWYG filter.
I cannot change to "Full HTML", because then this content is no more editable by moderators, but admins only.
I also do not see any security risks by allowing image maps.

I suggest to remove this mandatory restriction:

" Forbidden elements: < applet> < area> < base> < basefont> < body>... "

And let the site admins choose via the "element attributes filter" what they allow.
Admins usually know best what is secure enough for who " via role permissions ".

At the moment if anyone wants it right now
then quick fix is to open " wysiwyg_filter.inc " file.
search for " wysiwyg_filter_get_elements_blacklist() "
Delete the array content.

Leave it as:

function wysiwyg_filter_get_elements_blacklist() {
return array( );
}

I hope to see this fixed.

Please, refer to handbook for proper usage of issue attributes.

This issue was just a support request, and fixed in #1.

It could be turned into a feature request, yes. But then it would require someone to provide a patch to parse image map tags properly. Please, see #1 for reasons. Thanks. With no patch, this is better closed. The original reason why this was not implemented still applies: lack of time.

function servicereminder_menu(){
$items = array();
items['admin/config/servicereminder'] = array(
'title' => 'Service Reminder Admin Settings',
'description' => 'Adjusts Service Reminder Management Operations.',
'position' => 'right',
'weight' => -5,
'page callback' => 'system_admin_menu_block_page',
'access arguments' => array('administer site configuration'),
'file' => 'system.admin.inc',
'file path' => drupal_get_path('module', 'system'),
);

$items['admin/config/servicereminder/servicemangement'] = array(
'title' => 'Service Mangement',
'description' => 'Shows Customers Listing.',
'page callback' => 'customer_listing_admin',
'access arguments' => array('administer site configuration'),
'type' => MENU_NORMAL_ITEM,
);
return $items;
}

Feature Request for this functionality is created at http://drupal.org/node/1508346