add js include to like [!eform!]

<?php
    //adding CSS to the head of the document
    $modx->regCLientCSS($src);
    //$src can either be a path to a css file, a plain text block starting with "<style" or a 
    //fully formed "<link src=.../>" link tag.


    //adding script to the head of the document
    $modx->regClientStartupScript($src [, $plaintext]);
    //$src can be either a path to a script or a string of plain text - either by setting
    //the optional $plaintext param to 'true'  or if  the string starts with  <script

?>