Magento: Background Image trnasperent code :

Image background trnasperent code : ->keepFrame(false)

<img src="<?php echo $this->helper('catalog/image')->init($_product, 'small_image')->keepFrame(false)->resize(135); ?>" alt="<?php echo $this->stripTags($this->getImageLabel($_product, 'small_image'), null, true) ?>" width="179" height="123" />