gistfile1.txt

    public function diamondAction() {
        /**
         * Lets assume only one extra param is being passed for now
         */
        $params = $this->getRequest()->getParams();
        Mage::register('cmstemplate_navigation/grid', array("diamond",key($params)));
        $this->loadLayout()->renderLayout();
        Mage::unregister('cmstemplate_navigation/grid');
    }


<?php $_data = Mage::helper('cmstemplate/data')->getData(implode(".",array_filter($_key))) ?>