2012 Child Functions.php

<?php
// It's a new layout make the content wider
if ( ! isset( $content_width ) )
    $content_width = 940;

/** Tell WordPress to run post_theme_setup() when the 'after_setup_theme' hook is run. */
add_action( 'after_setup_theme', 'post_theme_setup' );

if ( !function_exists( 'post_theme_setup' ) ):
function post_theme_setup() {

    // The height and width of your custom header.
    // Add a filter to twentyeleven_header_image_width and twentyeleven_header_image_height to change these values.
    define( 'HEADER_IMAGE_WIDTH', apply_filters( 'twentyeleven_header_image_width', 1140 ) );
    define( 'HEADER_IMAGE_HEIGHT', apply_filters( 'twentyeleven_header_image_height', 150 ) );

    /* 1140 Remove Headers */
    function child_remove_twenty_eleven_headers(){
        unregister_default_headers( array(
            'wheel',
            'shore',
            'trolley',
            'pine-cone',
            'chessboard',
            'lanterns',
            'willow' ,
            'hanoi')
            );
    }
    add_action( 'after_setup_theme', 'child_remove_twenty_eleven_headers', 11 );
}
endif;