Several default theme_ and preproccess functions are implemented by default in the Madtheme:

phptemplate_preprocess_block: adds admin links to the blocks.

phptemplate_preprocess_page: adds variables, body classes and some of the theme settings to the page.

phptemplate_admin_block: adds icons to the admin menu.

phptemplate_breadcrumb: allows the page-title to be added to the breadcrumb.

phptemplate_preprocess_node: adds node classes and implements some of the theme settings.

phptemplate_preprocess_views_view: overrrides the views admin links.

phptemplate_blocks: adds <div>'s between the blocks, with classes such as 'after-second-block' that can be used to clear after each second, third or fourth block.

phptemplate_menu_local_tasks: adds some extra <div>'s to the tabs.

phptemplate_menu_item_link: adds a span to the menu items, needed for styling.

Madtheme_d6_preprocess_search_result: implements the theme settings in the search results, if the name of the theme changes, make sure to rename this function.

Madtheme_d6_preprocess_search_result: adds extra html to the buttons, so that it can use a (scaling) background.

theme_admin_links_popup: renders the admin links, and adds the needed .css and .js files.