multi-select

I have a select box in a html form that does not post values back to php. <select multiple='multiple' name='mydropdown'> <option value='1'>1</option> <option value='2'>2</option> <option value='3'>3</option> </select> in PHP if I have a look at the $_REQUEST it returns a single value for the LAST selected value in the select box. What do I need to change or edit in order to get a array or list of selected items posted back so that I can handle the result in PHP? I would like to transform the select into a JQuery multi select box so if your answer could apply to JQuery select boxes aswell I

<form action="<?=$_SERVER['PHP_SELF']?>" method="post"> <select name="test[]" multiple="multiple"> <option value="one">one</option> <option value="two">two</option> <option value="three">three</option> <option value="four">four</option> <option value="five">five</option> </select> <input type="submit" value="Send" /> </form> <?php $test=$_POST['test']; if ($test){ foreach ($test as $t){echo 'You selected ',$t,'<br />';} } if($t=='one') $price1=12; if($t=='two') $price2=2; $total = $price1 + $price2; echo $total; When one & two are both selected i'd like the result to be 14. What is the best

When I click on Shipping Methods tab under Magento system->configuration->SALES tab I am faced with the following error: Fatal error: Call to a member function toOptionArray() on a non-object in D:\xampp\htdocs\magento\app\code\core\Mage\Adminhtml\Block\System\Config\Form.php on line 463 The most astounding thing is that this is a fresh installation of Magento. Can anyone tell me how can I remove this error? Add to config.xml <global> <models> <stockindicator> <class>Namespace_ModuleName_Model</class> </stockindicator> </models> </global> Following this tutorial solve the problem => http://kb