Dynamically insert javascript into Wordpress posts or pages

<?php
/**
 * This function by Adam Scheinberg, Twitter @sethadam1
 * dynamically inserts javascript into posts or pages
 * @usage [jsembed id="scriptid" src="http://example.com"]
 */
function jsembed_shortcode($atts) {
     extract(shortcode_atts(array(
          'id' => "script".dechex(rand(1000000,9999999)), //random ID if there isn't one
          'src' => ''
     ), $atts));
     if(''==$src) { return; } else { return '<script id="'.$id.'" src="'.$src.'">'; }
}
add_shortcode('jsembed', 'jsembed_shortcode');