Theme functions

// Register Theme Features
function custom_theme_features()  {
	global $wp_version;

	// Add theme support for Post Formats
	$formats = array( 'status', 'quote', 'gallery', 'image', 'video', 'audio', 'link', 'aside', 'chat', );
	add_theme_support( 'post-formats', $formats );	

	// Add theme support for Featured Images
	add_theme_support( 'post-thumbnails' );	

	// Add theme support for Custom Background
	$background_args = array(
		'default-color'          => 'ffffff',
		'default-image'          => '',
		'wp-head-callback'       => '',
		'admin-head-callback'    => '',
		'admin-preview-callback' => '',
	);
	add_theme_support( 'custom-background', $background_args );

	// Add theme support for Custom Header
	$header_args = array(
		'default-image'          => '',
		'width'                  => 0,
		'height'                 => 0,
		'flex-width'             => false,
		'flex-height'            => false,
		'random-default'         => true,
		'header-text'            => false,
		'default-text-color'     => '',
		'uploads'                => true,
		'wp-head-callback'       => '',
		'admin-head-callback'    => '',
		'admin-preview-callback' => '',
	);
	if ( version_compare( $wp_version, '3.4', '>=' ) ) :
		add_theme_support( 'custom-header', $header_args );
	else :
		add_custom_image_header();
	endif;

	// Add theme support for Semantic Markup
	$markup = array( 'search-form', 'comment-form', 'comment-list', 'gallery', 'caption', );
	add_theme_support( 'html5', $markup );	

	// Add theme support for Translation
	load_theme_textdomain( 'text_domain', get_template_directory() . '/language' );	
}

// Hook into the 'after_setup_theme' action
add_action( 'after_setup_theme', 'custom_theme_features' );