Shortcode for image cta's

functions.php

/*
*   Shortcode for image cta 
*/
function cta_one( $atts ) {
	$a = shortcode_atts( array(
		'max_width' => '800px'
	), $atts );

	$img_src = get_template_directory_uri() . "/images/free-food-calc-wide.gif";

	return "<img src=" . $img_src . " style=" . "max-width:{$a['max_width']}" . ">";
}
add_shortcode( 'cta_one', 'cta_one' );

function cta_two( $atts ) {
	$a = shortcode_atts( array(
		'max_width' => '800px'
	), $atts );

	$img_src = get_template_directory_uri() . "/images/free-food-calc-tall.gif";

	return "<img src=" . $img_src . " style=" . "max-width:{$a['max_width']}" . ">";
}
add_shortcode( 'cta_two', 'cta_two' );