function slide()
{
$slide_id = $_GET['slide'];
$slide = new Slide();
$slide->createFromID($slide_id);
if ($slide->description) {
$slide->description = ereg_replace("[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]", "<a href=\"\\0\">\\0</a>", $slide->description);
}
//show error if slide does not exist
if (!isset($slide->slide_id)) {
header('Location: ' . BASE_PATH . 'error/404');
die;
}
$usage = $slide->getUsage();
$slide->comments = $slide->getComments();
$this->set('usage', $usage);
$this->set('slide', $slide);
$this->set('page_title', $slide->getTitle() . ' - SlideWiki');
}
