Magento : Check availability of product is In-Stock / Out-of-Stock

     $product = Mage::getModel('catalog/product')->load(""""Here product ID"""");

     $stock = Mage::getModel('cataloginventory/stock_item')->loadByProduct(""""Here product ID"""");

    if(($product->isSaleable())  &&  ($stock->getQty() > 0) )

   {
echo "In Stock";
    }

   else
   {
echo "Out of Stock";
    }