<?php
function magic_tabs_internalnav_callback() {
	global $user;

if(in_array('staff' or 'faculty',$user->roles)) {  
  $bid = 9;
  $block = (object)module_invoke('block', 'block', 'view', $bid);
  $block->module = 'block';
  $block->delta = $bid;
  
  $tabs[] = array(
    'title' => t('Staff'),
    'content' => theme('block', $block));
  }

if(in_array('faculty',$user->roles)) {   
  $bid = 8;
  $block = (object)module_invoke('block', 'block', 'view', $bid);
  $block->module = 'block';
  $block->delta = $bid;
  
  $tabs[] = array(
    'title' => t('Faculty'),
    'content' => theme('block', $block));
  }
  
if(in_array('student',$user->roles)) {   
  $bid = 1;
  $block = (object)module_invoke('block', 'block', 'view', $bid);
  $block->module = 'block';
  $block->delta = $bid;
  
  $tabs[] = array(
    'title' => t('Student'),
    'content' => theme('block', $block));
  }
  return $tabs;
}
?>