<style>
		.block {display:inline-block;width:30px;padding:5px;border:1px solid #E9E9E9;margin:2px;}
		.select {color:red;border:1px solid gray;cursor:pointer;cursor:hand;}
		.click {background-color: #CBE3B3;}
	</style>
<?php

	$array = array(
		array('-', 1, 2, 3, 4),
		array('a', 11, 21, 31, 41),
		array('b', 12, 22, 32, 42),
		array('c', 13, 23, 33, 43),
		'dop' => array('dop', 10, 11, 12, 13),
	);

	foreach ($array AS $key=>$value) {
		echo '<div>';
			foreach ($value AS $k=>$val) {
				$select = ($key != 'dop' and is_numeric($val)) ? 'select' : ''; 
				echo '<div class="block '.$select.'" rel="'.$k.'">'.$val.'</div>';
			}
		echo '</div>';
	}
	echo '<div id="result"></div>';
?>
	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
	<script>
		$(document).ready(function(){
			$('.select').click( function(){
				$('.select').removeClass('click');
				$(this).addClass('click');
				
				var rel = $(this).attr('rel'),
					number = Math.round( $(this).text() ),
					plus = Math.round( $('[rel="'+rel+'"].block:last').text() );
				
				$('#result').text(number+plus);
			});
		});
	</script>