Replace node id with other field from referenced node

template.php

function Berghoff2014_form_alter(&$form, &$form_state, $form_id) {

	if( $form_id === "webform_client_form_33" ) {
		/**
		** Replace NID from Agent with actual email **
		**/
		//$node_id =  $form['submitted']['agent']['#value'];
		$node_id = arg(1);

		//$agent = node_load($node_id);
		$agent = node_load( $node_id );

		$form['submitted']['agent']['#value'] = $agent->field_email['und'][0]['email'];
	}

	if( $form_id === "webform_client_form_34" ) {
		$taxonomy_id = arg(1);

		$country = taxonomy_term_load( $taxonomy_id );


		$form['submitted']['country']['#value'] = $country->name;
	}
}