Code for skin1/mail/html/order_invoice.tpl
Code:
{if $order.payment_method eq "Purchase Order"}
{php}
$wcmPurchaseOrder = $GLOBALS['smarty']->_tpl_vars['order']['details'];
$wcmPurchaseOrder = explode("\n",$wcmPurchaseOrder);
$wcmPurchaseOrder = $wcmPurchaseOrder[0];
$wcmPurchaseOrder = explode(" ",$wcmPurchaseOrder);
echo "<b>" . $wcmPurchaseOrder[0] . " " . $wcmPurchaseOrder[1] . " </b>" . $wcmPurchaseOrder[2];
{/php}