title: Table rowspan issue
body: <p>I have the following table. The header is at it looks and the content is generated within a PHP loop. It contains some taxes that a user has to pay and a tax can be paid in installments. For example, if the user has to pay a 100$ tax and he first pays 25$ and then 75$, there will be two rows in the table for that tax. </p>
  
  <p>What I seem to fail to accomplish is to make a rowspan so the tax name will be displayed only once. </p>
  
  <p>Any help is appreciated.</p>
  
  <pre><code>&lt;table cellpadding="0" cellspacing="0" width="100%" class="sortable"&gt;
      &lt;thead&gt;
          &lt;tr&gt;                                                        
              &lt;th width="10%"&gt;Tax name&lt;/th&gt;
              &lt;th width="10%"&gt;Value&lt;/th&gt;
              &lt;th width="10%"&gt;Paid&lt;/th&gt;
              &lt;th width="10%"&gt;Rest&lt;/th&gt;            
          &lt;/tr&gt;
      &lt;/thead&gt;
      &lt;tbody&gt;
          &lt;tr&gt;                                    
              &lt;td&gt;Sign-up tax&lt;/td&gt;
              &lt;td&gt;100$&lt;/td&gt;
              &lt;td&gt;25$&lt;/td&gt;
              &lt;td&gt;75$&lt;/td&gt;                        
          &lt;/tr&gt;   
          &lt;tr&gt;                                    
              &lt;td&gt;Sign-up tax&lt;/td&gt;
              &lt;td&gt;100$&lt;/td&gt;
              &lt;td&gt;75$&lt;/td&gt;
              &lt;td&gt;0$&lt;/td&gt;                        
          &lt;/tr&gt;
      &lt;/tbody&gt;
  &lt;/table&gt;
  </code></pre>
  
  <p>The PHP code looks like this:</p>
  
  <pre><code>&lt;?php for ($i = 0; $i &lt; count($tax_details); $i++): ?&gt;
  &lt;tr&gt;                                    
      &lt;td&gt;&lt;?php echo $tax_details[$i]['name']; ?&gt;&lt;/td&gt;
      &lt;td&gt;&lt;?php echo $tax_details[$i]['value']; ?&gt;&lt;/td&gt;
      &lt;td&gt;&lt;?php echo $tax_details[$i]['paid']; ?&gt;&lt;/td&gt;
      &lt;td&gt;&lt;?php echo $tax_details[$i]['rest']; ?&gt;&lt;/td&gt;                        
  &lt;/tr&gt;
  &lt;?php endfor; ?&gt;
  </code></pre>