title: Magento: get value of billing[use_for_shipping] in shipping_method/available.phtml
body: <p>In the file <code>shipping_method/available.phtml</code>,  is there any way to get the value of the radio button: <code>billing[use_for_shipping]</code> which appears on the Checkout Onepage billing.phtml page.  ? </p>
  
  <p>I have a custom option added to the <code>billing[use_for_shipping]</code> radio button group and I want to remove certain shipping options based on what the user selected. </p>