How to call image in static block

{{skin url='images/media/about_us_img.jpg'}}

How to call staick block in your template or .phtml files

<?php echo $this->getLayout()->createBlock('cms/block')->setBlockId('my_static_block_name')->toHtml() ?>

Phtml page call in cms page in magento

{{block type="core/template"  template="custompage/homecontent.phtml"}}

Product Type in magento

<?php  $productype=$_product->getTypeID(); ?>

Product Available (In stock/Out of stock)

<?php
         $thisProduct = Mage::getModel('catalog/product')->load($_product->getId());
         if($thisProduct->isAvailable()):
            echo $this->__('In stock');
         else:
            echo $this->__('Out of stock');
         endif;
    ?>

Magento current product id

$current_product_id = Mage::registry('current_product')->getId();

Magento default site map link

catalog/seo_sitemap/category/