Reorder Magento JavaScript Includes (addJs)

Question

I\'ll keep this simple.... on my product pages I need to remove the prototype.js file and replace it with the latest version of prototype. So far using local.xml I have successf

Answer 1

I think that Barny Shergold's solution is the most correct, but the comment about avoiding changing core files is correct. To have the best of both worlds, you can implement Barny's solution in a module that extends the Mage_Page_Block_Html_Head class like so:

Yourcompany/Layouthelper/etc/config.xml

<?xml version="1.0"?>
<config>
    <modules>
        <Yourcompany_Layouthelper>
            <version>0.0.1</version>
        </Yourcompany_Layouthelper>
    </modules>
    <global>
        <blocks>
            <page>
                <rewrite>
                    <html_head>Yourcompany_Layouthelper_Block_Html_Head</html_head>
                </rewrite>
            </page>
        </blocks>
    </global>
</config>

Yourcompany/Layouthelper/Block/Html/Head.php

class Yourcompany_Layouthelper_Block_Html_Head extends Mage_Page_Block_Html_Head {

    public function replaceItem($type, $name, $replace) {
        $newArray = array();

        foreach($this->_data['items'] as $key => $value) {
            if($key == $type.'/'.$name) {
                $newArray[$type . '/'. $replace] = array(
                'type'   => $type,
                'name'   => $replace,
                'params' => $value['params'],
                'if'     => $value['if'],
                'cond'   => $value['cond']);
            } else {
                $newArray[$key] = $value;
            }
        }
        $this->_data['items'] = $newArray;
        return $this;
    }
}