I\'m running on version 1.3.2.1, but on my client\'s server they had Magento 1.3.0 so my previous code to display images for my local copy,
echo $this->he
get product images in magento using product id
$product_id = $_POST['product_id'];
$storeId = Mage::app()->getStore()->getId();
$loadpro = Mage::getModel('catalog/product')->load($product_id);
$mediaApi = Mage::getModel("catalog/product_attribute_media_api");
$mediaApiItems = $mediaApi->items($loadpro->getId());
foreach ($mediaApiItems as $item) {
//for getting existing Images
echo $item['file'];
}