add_action('init', 'create_portfolio');

function create_portfolio() {

    $labels = array(
        'name' => __('Portfolio', 'post type general name'),
        'singular_name' => __('Project', 'post type singular name'),
        'add_new' => __('Add New', 'portfolio item'),
        'add_new_item' => __('Add New Project'),
        'edit_item' => __('Edit Project'),
        'new_item' => __('New Project'),
        'view_item' => __('View Project'),
        'search_items' => __('Search Projects'),
        'not_found' =>  __('Nothing found'),
        'not_found_in_trash' => __('Nothing found in Trash'),
        'parent_item_colon' => ''
    );

    $args = array(
        'labels' => $labels,
        'public' => true,
        'publicly_queryable' => true,
        'show_ui' => true,
        'query_var' => true,
        'menu_icon' => get_stylesheet_directory_uri() . '/article16.png',
        'rewrite' => true,
        'capability_type' => 'post',
        'hierarchical' => false,
        'menu_position' => null,
        'supports' => array('title','editor','thumbnail')
      );

    register_post_type( 'portfolio' , $args );
}

register_taxonomy("Skills", array("portfolio"), array("hierarchical" => true, "label" => "Skills", "singular_label" => "Skill", "rewrite" => true));

add_action("admin_init", "admin_init");

function admin_init(){
  add_meta_box("website_url", "Website URL", "website_url", "portfolio", "side", "low");
  add_meta_box("special_notes", "Special Notes", "special_notes", "portfolio", "side", "low");
}

function website_url(){
  global $post;
  $custom = get_post_custom($post->ID);
  $website_url = $custom["website_url"][0];
  ?>
  <label>Website URL:</label>
  <input name="website_url" value="<?php echo $website_url; ?>" />
  <?php
}

function special_notes() {
  global $post;
  $custom = get_post_custom($post->ID);
  $special_notes = $custom["special_notes"][0];
  ?>
  <label>Special Notes:</label>
  <input name="special_notes" value="<?php echo $special_notes; ?>" />
  <?php
}

add_action('save_post', 'save_details');

function save_details(){
  global $post;

  update_post_meta($post->ID, "website_url", $_POST["website_url"]);
  update_post_meta($post->ID, "special_notes", $_POST["special_notes"]);
}

add_action("manage_posts_custom_column",  "portfolio_custom_columns");
add_filter("manage_edit-portfolio_columns", "portfolio_edit_columns");

function portfolio_edit_columns($columns){
  $columns = array(
    "cb" => "<input type=\"checkbox\" />",
    "title" => "Project Title",
    "description" => "Description",
  );

  return $columns;
}
function portfolio_custom_columns($column){
  global $post;

  switch ($column) {
    case "description":
      the_excerpt();
      break;
  }
}