Magento IMAGE wysiwyg Directive
http://magento.stackexchange.com/questions/4775/equivalent-of-the-cms-directive-media-url-in-normal-block-templates
Use on Pages
{{media url="wysiwyg/image.jpg"}}
<img alt="image" src="{{media url="wysiwyg/all_new_products.jpg"}}">
Use on Template Files:
<img src="<?php echo Mage::getBaseUrl('media') ?>image.jpg">