How to use storeAttribute in Selenium RC -

i need use waitforattribute() - having issues getting attribute need, looking example usage of storeattribute() using php.

sample dom

<div class="sidebar">     <a class="add"></a> </div> 

i want class of <a>

// $foo null $foo = $this->storeattribute('css=div.sidebar@class');  // error: element css=div.sidebar["class" not found $foo = $this->storeattribute('css=div.sidebar["class"]'); 

i'm using css selectors, don't mind using xpath.

i changed strategy - else running issues moved in order waitforattribute() work:

$this->waitforcondition("selenium.browserbot.getcurrentwindow().$('div.sidebar a').hasclass('remove')");