Something

function selector_cats() {	global $categories;	$content = '<div class="selector_cat" id="selector_cat">';	$content .= '<form action="'.absolute_app_url('home', array('type' => 2)).'" method="post">';	$category_options = '<option value="All">All</option>';	foreach( $categories as $category ){ $category_options .= '<option value="'.$category.'">'.$category.'</option>'; }	$content .= 'Category: <select name="category">'.$category_options.'</select>';	$content .= '<input type="hidden" name="type" value="'.$_REQUEST['type'].'" />';	$content .= '<input type="hidden" name="testing" value="testing" />';	$content .= '<input type="submit" value="Show" class="inputsubmit" />';	$content .= '</form>';	$content .= '</div>';	return $content;}