<?php
if (function_exists('register_sidebar')) {
    	register_sidebar(array(
    		'name' => 'Sidebar Widgets',
    		'id'   => 'sidebar-widgets',
    		'description'   => '页面挂件区域（关于我们等）',
    		'before_widget' => '<div id="%1$s" class="widget %2$s">',
    		'after_widget'  => '</div>',
    		'before_title'  => '<h2>',
    		'after_title'   => '</h2>'
    	));
		
    }
function unregister_default_wp_widgets() {
	unregister_widget('WP_Widget_Pages');
	unregister_widget('WP_Widget_Calendar');
	unregister_widget('WP_Widget_Archives');
	unregister_widget('WP_Widget_Links');
	unregister_widget('WP_Widget_Meta');
	unregister_widget('WP_Widget_Search');
	unregister_widget('WP_Widget_Categories');
	unregister_widget('WP_Widget_Recent_Posts');
	unregister_widget('WP_Widget_Recent_Comments');
	unregister_widget('WP_Widget_RSS');
	unregister_widget('WP_Widget_Tag_Cloud');
}
include_once("widget/nav.php");
include_once("widget/cat_posts-news1.php");
include_once("widget/cat_posts-news2.php");
include_once("widget/cat_posts-news3.php");
include_once("widget/cat_posts-news_smoll.php");
add_action('widgets_init', 'unregister_default_wp_widgets', 1);

function catch_that_image() {
  global $post, $posts;
  $src= wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), "full" , false, '' ); ;
  $first_img = '';
  ob_start();
  ob_end_clean();
  $output = preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches);
  $first_img = $matches [1] [0];
  if(empty($first_img)){ //Defines a default image
    $first_img = $src[0];
  }
  return $first_img;
 
}

?>