headjs for vbulletin

[cellow]

Could somebody with skills code this wordpress plugin also for vb3 and vb4?

http://wordpress.org/extend/plugins/headjs-plus/

this framework will load all jscripts asynchronous, so the page will endup load faster for the user...

the code looks like this:

<?php
/**
Plugin Name: HeadJS Plus
Plugin URI: http://wordpress.org/extend/plugins/headjs-plus/
Description: A plugin to load <a href="http://headjs.com">HeadJS</a> in Wordpress to speedup loading.
Version: 0.96.1
Author: Ramoonus
Author URI: http://www.ramoonus.nl/
*/

// when its not declared
if (!class_exists('headJS_loader')) {
/*
* headJS_loader is the class that handles ALL of the plugin functionality. It helps us avoid name collisions
* http://codex.wordpress.org/Writing_a_Plugin#Avoiding_Function_Name_Collisions
* @package headJS_loader
*/
class headJS_loader {

/* Initializes the plugin and sets up all actions and hooks necessary. */
function headJS_loader() {

/* No need to run on admin / rss / xmlrpc */
if (!is_admin() && !is_feed() && !defined('XMLRPC_REQUEST')) {
$this->_pluginName = 'headjs-plus';
add_action('init', array($this, 'pre_content'), 99998);
add_action('wp_footer', array($this, 'post_content'));
}

}

/* Buffer the output so we can play with it. */
function pre_content() {

ob_start(array($this, 'modify_buffer'));

/* Variable for sanity checking */
$this->buffer_started = true;

}

/**
* Modify the buffer. Search for any js tags in it and replace them with Head JS calls.
*
* @return string buffer
*/
function modify_buffer($buffer) {

$script_array = array();
/* Look for any script tags in the buffer */
preg_match_all('/<script([^>]*?)><\/script>/i', $buffer, $script_tags_match);
if (!empty($script_tags_match[0])) {
foreach ($script_tags_match[0] as $script_tag) {
if (strpos(strtolower($script_tag), 'text/javascript') !== false) {
preg_match('/src=[\'"]([^\'"]+)/', $script_tag, $src_match);
if ($src_match[1]) {
/* Remove the script tags */
$buffer = str_replace($script_tag, '', $buffer);
/* Save the script location */
$script_array[] = $src_match[1];
}
}
}
}

/* Sort out the Head JS */
$headJS = '<script type="text/javascript" src="' . get_bloginfo('wpurl') . '/wp-content/plugins/' . $this->_pluginName . '/js/head.min.js"></script>';

if (!empty($script_array)) {
$script_array = array_unique($script_array);
$i=0;
foreach ($script_array as $script_location) {
/* Load the scripts into a .js */
if ($i != 0) { $js_files .= "\n "; }
$js_files .= '.js("' . $script_location . '")';
$i++;
}
$headJS .= "\n<script>\nhead" . $js_files . ";\n</script>";
}

/* Write Head JS before the end of head */
$buffer = str_replace('</head>', $headJS . "\n</head>", $buffer);

return $buffer;
}

/* After we are done modifying the contents, flush everything out to the screen. */
function post_content() {
// sanity checking
if ($this->buffer_started) {
ob_end_flush();
}
}

} // class headJS_loader
} // if !class_exists('headJS_loader')

/*
* Instantiate our class
*/
if (class_exists('headJS_loader')) {
$headJS_loader = new headJS_loader();
}
?>