Show category posts in page, two-column formatting, cleared floats.

functions-1365759470.php

<?php
function pp_custom_content($atts) {
  extract(shortcode_atts(array(
		'type' => '',
		'cat' => '',
	), $atts));

	$am_display = '';
		$loop = new WP_Query(array('post_type' => $type, 'posts_per_page' => 10, 'category_name' => $cat));
		while($loop->have_posts()) : $loop->the_post();
			$am_display .= '<div style="float: left; width: 47%; margin-right: 16px; height: 200px; overflow: hidden;">';
				$am_display .= '<div style="float: left; margin-right: 8px;"><a href="' . get_permalink() . '">' . get_the_post_thumbnail(get_the_ID(), 'thumbnail') . '</a></div>';
				$am_display .= '<div><strong>' . get_the_title() . '</strong> (<a href="' . get_permalink() . '">Detalii</a>)<br>' . get_the_excerpt() . '</div>';
			$am_display .= '</div>';
		endwhile;

	$am_display .= '<br clear="all">';
	$am_display .= '<hr>';

	return $am_display;
}

// usage: [pp type="post" cat="category"]
add_shortcode('pp', 'pp_custom_content'); // shortcode, function
?>