modx 1.xx snippet to revo snippet

<?php
$output = '';
$docInfo = $modx->documentObject;

$output .= '<div class="color_code">
                <strong>Color code</strong>';

if ($docInfo['description'] != '')
{
$output .='<p>EU '.$docInfo['description'].' <img src="assets/images/nfm/c_'.$docInfo['description'].'.png"  alt="EU '.$docInfo['description'].'" /></p>';
}
if ($docInfo['introtext'] != '')
{
$output .='<p>USA '.$docInfo['introtext'].' <img src="assets/images/nfm/c_'.$docInfo['introtext'].'.png"  alt="USA '.$docInfo['introtext'].'" /></p>';
}

$output .=  '</div>';

return $output;