function bp_dtheme_custom_background_style() {
	$background = get_background_image();
	$color = get_background_color();
	if ( ! $background && ! $color )
		return;

	$style = $color ? "background-color: #$color;" : '';

	if ( $style && !$background ) {
		$style .= ' background-image: none;';

	} elseif ( $background ) {
		$image = " background-image: url('$background');";

		$repeat = get_theme_mod( 'background_repeat', 'repeat' );
		if ( ! in_array( $repeat, array( 'no-repeat', 'repeat-x', 'repeat-y', 'repeat' ) ) )
			$repeat = 'repeat';
		$repeat = " background-repeat: $repeat;";

		$position = get_theme_mod( 'background_position_x', 'left' );
		if ( ! in_array( $position, array( 'center', 'right', 'left' ) ) )
			$position = 'left';
		$position = " background-position: top $position;";

		$attachment = get_theme_mod( 'background_attachment', 'scroll' );
		if ( ! in_array( $attachment, array( 'fixed', 'scroll' ) ) )
			$attachment = 'scroll';
		$attachment = " background-attachment: $attachment;";

		$style .= $image . $repeat . $position . $attachment;
	}
?>
	<style type="text/css">
		body { <?php echo trim( $style ); ?> }
	</style>
<?php
}