if (@txpinterface == 'admin') {
	global $txp_user, $smd_faux_publish_user, $smd_faux_position, $smd_privs;

	// PUT YOUR SUPER-USER LOGIN NAME(S) INSIDE THE '' (CASE SENSITIVE).
	// COMMA-SEPARATE THE LIST OF NAMES.
	$smd_faux_publish_user = '';

	// DROPDOWN LOCATION. SET THIS TO:
	//  * 0 IF YOU WANT AN ADMIN->SWITCH ROLE TAB WITH THE DROPDOWN IN IT.
	//  * ANY OTHER VALUE(S) SPECIFY WHERE YOU WANT THE DROPDOWN TO APPEAR IN A FIXED LOCATION ON THE SCREEN
	//    --> THE VALUE IS THE NUMBER OF PIXELS FROM THE LEFT & TOP EDGES, e.g. '800' or '750,72'.
	$smd_faux_position = '0';

	// DON'T TOUCH ANYTHING BELOW THIS LINE!
	$smd_privs = array(
		1 => gTxt('publisher'),
		2 => gTxt('managing_editor'),
		3 => gTxt('copy_editor'),
		4 => gTxt('staff_writer'),
		5 => gTxt('freelancer'),
		6 => gTxt('designer'),
	);

	if (in_list($txp_user, $smd_faux_publish_user)) {
		if ($smd_faux_position) {
			// Add the dropdown to the top bar
			register_callback('smd_faux_go', 'admin_side', 'header');
		} else {
			// Add the interface to the Admin tab since that's visible to all users
			add_privs('smd_faux_role', '1,2,3,4,5,6');
			register_tab('admin', 'smd_faux_role', smd_faux_gTxt('tab_name'));
			register_callback('smd_faux_role', 'smd_faux_role');
		}
		register_callback('smd_faux_plugin_off', 'plugin_lifecycle.smd_faux_role', 'disabled');
		register_callback('smd_faux_plugin_off', 'plugin_lifecycle.smd_faux_role', 'deleted');
	}
}

// Plugin jump-off point
function smd_faux_role($event, $step) {
	if(!$step or !in_array($step, array(
		'smd_faux_prefs',
		'smd_faux_save',
	))) {
		smd_faux_prefs();
	} else $step();
}

// Allow role to be altered via dropdown on its own tab...
function smd_faux_prefs($msg='') {
	$msg = (empty($msg)) ? gps('smd_faux_msg') : $msg;

	pagetop(smd_faux_gTxt('tab_name'), $msg);
	echo smd_faux_dropdown();
}

// ...or position the dropdown on the top row
function smd_faux_go($event, $step, $data) {
	global $smd_faux_position;

	smd_faux_save();
	$pos = do_list($smd_faux_position);
	$left = (isset($pos[0]) && is_numeric($pos[0])) ? $pos[0] : 0;
	$top = (isset($pos[1]) && is_numeric($pos[1])) ? $pos[1] : 0;
	return '<div id="smd_faux_go" style="position:absolute;left:'.$left.'px;top:'.$top.'px;">'.smd_faux_dropdown().'</div>'.$data;
}

// Render the dropdown
function smd_faux_dropdown() {
	global $txp_user, $smd_faux_publish_user, $smd_faux_position, $smd_privs;

	$userlist = do_list($smd_faux_publish_user);
	$out = '';

	foreach ($userlist as $theUser) {
		if ($txp_user == $theUser) {
			$curr_privs = safe_field("privs", "txp_users", "name = '".doSlash($theUser)."'");
			$out = form(
				'<div style="text-align:center">'.smd_faux_gTxt('set_user', array('{name}' => $theUser))
				. selectInput('smd_faux_priv', $smd_privs, $curr_privs, '', 1)
				.(($smd_faux_position) ? eInput(gps('event')).sInput(gps('step')) : eInput('smd_faux_role').sInput('smd_faux_save'))
				.hInput('smd_faux_user', $theUser)
				. '</div>'
				);
		}
	}
	return $out;
}

// Update the user privs in the database when the select list is altered
function smd_faux_save() {
	global $smd_privs, $smd_faux_position;

	$priv = gps('smd_faux_priv');
	$uname = doSlash(gps('smd_faux_user'));
	$msg = '';

	if ($priv && $uname) {
		assert_int($priv);
		$check = safe_field('name', 'txp_users', "name='$uname'");

		// Alter the privs of the nominated super-user
		if ($check) {
			safe_update('txp_users', 'privs='.doSlash($priv), "name = '".$uname."'");
			$msg = smd_faux_gTxt('new_role', array('{name}' => $uname, '{role}' => $smd_privs[$priv]));
		} else {
			$msg = smd_faux_gTxt('bad_user', array('{name}' => $uname));
		}

		if ($smd_faux_position) {
			header("Location: ".$_SERVER['HTTP_REFERER']);
		} else {
			$args['event'] = 'smd_faux_role';
			$args['step'] = 'smd_faux_prefs';
			$args['smd_faux_msg'] = $msg;
			header("Location: ".$_SERVER['REQUEST_URI'].str_replace('&amp;', '&', join_qs($args)));
		}
	}
}

// Restore publisher privs if plugin is deleted/disabled
function smd_faux_plugin_off($event, $step) {
	global $smd_faux_publish_user;

	$userlist = do_list($smd_faux_publish_user);

	foreach ($userlist as $theUser) {
		safe_update('txp_users', 'privs=1', "name = '".doSlash($theUser)."'");
	}
}

// Plugin-specific replacement strings - localise as required
function smd_faux_gTxt($what, $atts = array()) {
	$lang = array(
		'bad_user' => 'No such user: {name}',
		'new_role' => 'New role for {name} is {role}',
		'set_user' => 'Set user {name} to: ',
		'tab_name' => 'Switch role',
	);
	return strtr($lang[$what], $atts);
}