You might consider to open an enhancement ticket to include this functionality into the core AjaxHelper.

<?php
class MyAjaxHelper extends AjaxHelper {

/**
 * Returns link to remote action
 *
 * Returns a link to a remote action defined by <i>options[url]</i>
 * (using the url() format) that's called in the background using
 * XMLHttpRequest. The result of that request can then be inserted into a
 * DOM object whose id can be specified with <i>options[update]</i>.
 *
 * Examples:
 * &lt;code&gt;
 *  link("Delete this post",
 * array("update" => "posts", "url" => "delete/{$postid->id}"));
 *  link(imageTag("refresh"),
 *		array("update" => "emails", "url" => "list_emails" ));
 * &lt;/code&gt;
 *
 * By default, these remote requests are processed asynchronous during
 * which various callbacks can be triggered (for progress indicators and
 * the likes).
 *
 * Example:
 * &lt;code&gt;
 *	link (word,
 *		array("url" => "undo", "n" => word_counter),
 *		array("complete" => "undoRequestCompleted(request)"));
 * &lt;/code&gt;
 *
 * The callbacks that may be specified are:
 *
 * - <i>loading</i>::		Called when the remote document is being
 *							loaded with data by the browser.
 * - <i>loaded</i>::		Called when the browser has finished loading
 *							the remote document.
 * - <i>interactive</i>::	Called when the user can interact with the
 *							remote document, even though it has not
 *							finished loading.
 * - <i>complete</i>:: Called when the XMLHttpRequest is complete.
 *
 * If you for some reason or another need synchronous processing (that'll
 * block the browser while the request is happening), you can specify
 * <i>options[type] = synchronous</i>.
 *
 * You can customize further browser side call logic by passing
 * in Javascript code snippets via some optional parameters. In
 * their order of use these are:
 *
 * - <i>confirm</i>:: Adds confirmation dialog.
 * -<i>condition</i>::	Perform remote request conditionally
 *                      by this expression. Use this to
 *                      describe browser-side conditions when
 *                      request should not be initiated.
 * - <i>before</i>::		Called before request is initiated.
 * - <i>after</i>::		Called immediately after request was
 *						initiated and before <i>loading</i>.
 *
 * @param string $title Title of link
 * @param string $href Href string "/products/view/12"
 * @param array $options		Options for JavaScript function
 * @param string $confirm		Confirmation message. Calls up a JavaScript confirm() message.
 * @param boolean $escapeTitle  Escaping the title string to HTML entities
 *
 * @return string				HTML code for link to remote action
 */
	function link($title, $href = null, $options = array(), $confirm = null, $escapeTitle = true) {
		if (!isset($href)) {
			$href = $title;
		}
		if (!isset($options['url'])) {
			$options['url'] = $href;
		}		

		if (isset($confirm)) {
			$options['confirm'] = $confirm;
			unset($confirm);
		}
		$htmlOptions = $this-&gt;__getHtmlOptions($options, array('url'));

		if (empty($options['fallback']) || !isset($options['fallback'])) {
			$options['fallback'] = $href;
		}
		$htmlOptions = array_merge(array('id' =&gt; 'link' . intval(rand()), 'onclick' =&gt; ''), $htmlOptions);

		$htmlOptions['onclick'] .= ' event.returnValue = false; return false;';
		$return = $this-&gt;Html-&gt;link($title, $href, $htmlOptions, null, $escapeTitle);
//		pr($options);
		if(is_array($options['url']) &amp;&amp; is_array($options['update']))
		{
			$script="";
			$opts=array();
			foreach($options['url'] as $key=&gt;$val){
				$opts[$key]['url']=$val;
			}
			foreach($options['update'] as $key=&gt;$val){
				$opts[$key]['update']=$val;
				$opts[$key]['fallback']=$options['fallback'];
				$opts[$key]['indicator']=$options['indicator'];
				$script .= $this-&gt;Javascript-&gt;event("'{$htmlOptions['id']}'", "click", $this-&gt;remoteFunction($opts[$key]));
			}
		}		

		if (is_string($script)) {
			$return .= $script;
		}
		return $return;
	}
	
	function submit($title = 'Submit', $options = array()) {
		$htmlOptions = $this-&gt;__getHtmlOptions($options);
		$htmlOptions['value'] = $title;

		if (!isset($options['with'])) {
			$options['with'] = 'Form.serialize(Event.element(event).form)';
		}
		if (!isset($htmlOptions['id'])) {
			$htmlOptions['id'] = 'submit' . intval(rand());
		}
		
		if(is_array($options['url']) &amp;&amp; is_array($options['update']))
		{
			$script="";
			$opts=array();
			foreach($options['url'] as $key=&gt;$val){
				$opts[$key]['url']=$val;
			}
			foreach($options['update'] as $key=&gt;$val){
				$opts[$key]['update']=$val;
				$opts[$key]['class']=$options['class'];
				$opts[$key]['with']=$options['with'];
				$script .= $this-&gt;Javascript-&gt;event('"' . $htmlOptions['id'] . '"', 'click', $this-&gt;remoteFunction($opts[$key]));
			}			
		}
		$htmlOptions['onclick'] = "event.returnValue = false; return false;";
		return $this-&gt;Form-&gt;submit($title, $htmlOptions).$script;
	}
}
?&gt;

// How to use

submit('submit',array('url' =&gt; array('url 1 here','url 2 here'), 'update' =&gt; array('div 1 here','div 2 here')));	?&gt;

regards

$this->render('first', 'ajax');
//for this example

doing
$this->render(‘first’, ‘ajax’);
$this->render(‘second’, ‘ajax’);
doesnt work

some help?
regards

@Zonium: Thanks for providing the answer!

var __ajaxUpdater__ = {first:”first%20div%20updated%3A%201196754195″,
second:”second%20div%20updated%0D%0A”};
for (n in __ajaxUpdater__) { if (typeof __ajaxUpdater__[n] == “string” && $(n)) Element.update($(n),
unescape(decodeURIComponent(__ajaxUpdater__[n]))); }

I didnt really manage to understand the ajax helper code, but I think the ajax divs are conditionally rendered based on wheter or not an ajax request needs the div. Correct me if i’m wrong…