Плагин упощающий подключение jquery и плагинов для jquery/mootools. В основном для разработчиков - Расширения форумчан

JHtml::_('behavior.имяплагина', '.selector', array('option1' => 'value1', 'option2' => 'value2');

/**
 * Render messages send via JSON
 *
 * @param	object	messages	JavaScript object containing the messages to render
 * @return	void
 */
Joomla.renderMessages = function(messages) {
	Joomla.removeMessages();
	var container = document.id('system-message-container');

	var dl = new Element('dl', {
		id: 'system-message',
		role: 'alert'
	});
	Object.each(messages, function (item, type) {
		var dt = new Element('dt', {
			'class': type,
			html: type
		});
		dt.inject(dl);
		var dd = new Element('dd', {
			'class': type
		});
		dd.addClass('message');
		var list = new Element('ul');

		Array.each(item, function (item, index, object) {
			var li = new Element('li', {
				html: item
			});
			li.inject(list);
		}, this);
		list.inject(dd);
		dd.inject(dl);
	}, this);
	dl.inject(container);
};

/**
 * Render messages send via JSON
 *
 * @param	object	messages	JavaScript object containing the messages to render
 * @return	void
 */
Joomla.renderMessages = function(messages) {
    Joomla.removeMessages();
    var container = document.getElementById('system-message-container');

    var dl = document.createElement('dl');
    dl.id = 'system-message';
    dl.role = 'alert';

    var type, item, dt, dd, list, li;
    for ( type in messages ) {
        if ( Object.prototype.hasOwnProperty.call ( messages, type ) ) {
            item = messages[ type ];
            dt = document.createElement('dt');
            dt.className = type;
            dt.innerHTML = type;
            dl.appendChild( dt );

            dd = document.createElement('dd');
            dd.className = type + ' message';
            
            list = document.createElement('ul');
            
            for ( var i = 0, len = item.length; i < len; i++ ) {
                li = document.createElement('li');
                li.innerHTML = item[ i ];
                list.appendChild( li );
            }
            
            dd.appendChild( list );
            dl.appendChild( dd );
            
        }
    }
    dt = dd = list = li = null;
    
    container.appendChild(dl);
};

CCK_Submit = function(task) { if ($j("#seblod_form").validationEngine("validate") === true) { Joomla.submitform("search", document.getElementById("seblod_form")); } }

{ Joomla.submitform("search", document.getElementById("seblod_form")); }

Joomla.submitform = function(task, form) {
	if (typeof(form) === 'undefined') {
		form = document.getElementById('adminForm');
		/**
		 * Added to ensure Joomla 1.5 compatibility
		 */
		if(!form){
			form = document.adminForm;
		}
	}

	if (typeof(task)!== 'undefined' && '' !== task) {
		form.task.value = task;
	}

	// Submit the form.
	if (typeof form.onsubmit == 'function') {
		form.onsubmit();
	}
	if (typeof form.fireEvent == "function") {
		form.fireEvent('submit');
	}
	form.submit();
};

	if (typeof form.fireEvent == "function") {
		form.fireEvent('submit');

	public function fetchHead(&$document)
	{
		// Trigger the onBeforeCompileHead event (skip for installation, since it causes an error)
		$app = JFactory::getApplication();
		$app->triggerEvent('onBeforeCompileHead');
... }

$document = & JFactory::getDocument();

$lnEnd = $document->_getLineEnd();
$tab = $document->_getTab();
$tagEnd = ' />';
$buffer = '';


// Generate script file links
foreach ($document->_scripts as $strSrc => $strAttr)
{
	$buffer .= $tab . '<script src="' . $strSrc . '"';
	if (!is_null($strAttr['mime']))
	{
		$buffer .= ' type="' . $strAttr['mime'] . '"';
	}
	if ($strAttr['defer'])
	{
		$buffer .= ' defer="defer"';
	}
	if ($strAttr['async'])
	{
		$buffer .= ' async="async"';
	}
	$buffer .= '></script>' . $lnEnd;
}

// Generate script declarations
foreach ($document->_script as $type => $content)
{
	$buffer .= $tab . '<script type="' . $type . '">' . $lnEnd;

	// This is for full XHTML support.
	if ($document->_mime != 'text/html')
	{
		$buffer .= $tab . $tab . '<![CDATA[' . $lnEnd;
	}

	$buffer .= $content . $lnEnd;

	// See above note
	if ($document->_mime != 'text/html')
	{
		$buffer .= $tab . $tab . ']]>' . $lnEnd;
	}
	$buffer .= $tab . '</script>' . $lnEnd;
}

// Generate script language declarations.
if (count(JText::script()))
{
	$buffer .= $tab . '<script type="text/javascript">' . $lnEnd;
	$buffer .= $tab . $tab . '(function() {' . $lnEnd;
	$buffer .= $tab . $tab . $tab . 'var strings = ' . json_encode(JText::script()). ';' . $lnEnd;
	$buffer .= $tab . $tab . $tab . 'if (typeof Joomla == \'undefined\') {' . $lnEnd;
	$buffer .= $tab . $tab . $tab . $tab . 'Joomla = {};' . $lnEnd;
	$buffer .= $tab . $tab . $tab . $tab . 'Joomla.JText = strings;' . $lnEnd;
	$buffer .= $tab . $tab . $tab . '}' . $lnEnd;
	$buffer .= $tab . $tab . $tab . 'else {' . $lnEnd;
	$buffer .= $tab . $tab . $tab . $tab . 'Joomla.JText.load(strings);' . $lnEnd;
	$buffer .= $tab . $tab . $tab . '}' . $lnEnd;
	$buffer .= $tab . $tab . '})();' . $lnEnd;
	$buffer .= $tab . '</script>' . $lnEnd;
}

$document->setBuffer($buffer, array('type' => 'scripts'));

JHtml::_('behavior.fancybox', '.fancybox');

<a href="path/to/photo.jpg" class="fancybox"><img src="path/to/preview.jpg" alt="Фотка. Превью" /></a>