[AlexBrock]

That would be helpful wouldn't it!

So in the template file I have:

{vb:data returnHead, options, mcheadfunction}
{vb:raw returnHead}

Which is calling my API:

<?php 
class Mcheadd_Api_Options extends vB_Api_Extensions
{
	public $product = 'mcheadd';

	public $developer = 'Developer';
	public $title = 'Pull in Domain Name header';
	public $minver = '5.1.0';
	// public $maxver = '5.9.99';// Use vB default.
	// public $infourl = 'Domain Name';
	// public $checkurl = 'Domain Name';

	public $AutoInstall = 0;
	public $extensionOrder = 10;

	public function mcheadfunction(){
		// create curl resource 
        $ch = curl_init(); 

        // set url 
        curl_setopt($ch, CURLOPT_URL, "DomainName"); 

        //return the transfer as a string 
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 

        // $output contains the output string 
        $output = curl_exec($ch); 

        $page_parts = explode('<!-- Top navigtation -->', $output);
        $page_parts = explode('<!-- DAB container -->', $page_parts[1]);

 $header_html = '<div id="header-mc">' . $page_parts[0] ;

        $header_html = str_replace("'", '"', $header_html);

        $output = str_replace(array("\r\n", "\r"), "\n", $header_html);
		$lines = explode("\n", $output);
		$new_lines = array();

		foreach ($lines as $i => $line) {
		    if(!empty($line))
		        $new_lines[] = trim($line);
		}
		$pageStuff = implode($new_lines);

		echo '<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>';

        echo "<script> $(document).ready(function(){  $('#outer-wrapper').prepend('" . $pageStuff . "'); $('.hamburger').click(function(){ $('#nav_top ul').toggleClass('mobile_show'); });}); </script>";

        curl_close($ch); 

	}	

}