title: "visibility:hidden;" is not working with TCPDF
body: <p>I just try to HTML to PDF with TCPDF</p>
  
  <p>but something is wrong </p>
  
  <p>The CSS visibility Property is not working to me</p>
  
  <p>this is my php code:</p>
  
  <pre><code>&lt;?php
  </code></pre>
  
  <p>Include the main TCPDF library (search for installation path).</p>
  
  <pre><code>require_once('tcpdf_include.php');
  </code></pre>
  
  <p>create new PDF document</p>
  
  <pre><code>$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
  </code></pre>
  
  <p>set document information</p>
  
  <pre><code>$pdf-&gt;SetCreator(PDF_CREATOR);
  $pdf-&gt;SetAuthor('Nicola Asuni');
  $pdf-&gt;SetTitle('TCPDF Example 061');
  $pdf-&gt;SetSubject('TCPDF Tutorial');
  $pdf-&gt;SetKeywords('TCPDF, PDF, example, test, guide');
  </code></pre>
  
  <p>set default header data</p>
  
  <pre><code>$pdf-&gt;SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE.' 061', PDF_HEADER_STRING);
  // set header and footer fonts
  $pdf-&gt;setHeaderFont(Array(PDF_FONT_NAME_MAIN, '', PDF_FONT_SIZE_MAIN));
  $pdf-&gt;setFooterFont(Array(PDF_FONT_NAME_DATA, '', PDF_FONT_SIZE_DATA));
  // set default monospaced font
  $pdf-&gt;SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);
  // set margins
  $pdf-&gt;SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
  $pdf-&gt;SetHeaderMargin(PDF_MARGIN_HEADER);
  $pdf-&gt;SetFooterMargin(PDF_MARGIN_FOOTER);
  // set auto page breaks
  $pdf-&gt;SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);
  // set image scale factor
  $pdf-&gt;setImageScale(PDF_IMAGE_SCALE_RATIO);
  // set some language-dependent strings (optional)
  if (@file_exists(dirname(__FILE__).'/lang/eng.php')) {
      require_once(dirname(__FILE__).'/lang/eng.php');
      $pdf-&gt;setLanguageArray($l);
  }
  // set font
  $pdf-&gt;SetFont('helvetica', '', 10);
  
  // add a page
  $pdf-&gt;AddPage();
  $html = &lt;&lt;&lt;EOF
  
  //HTML code
  
  EOF;
  
  // output the HTML content
  $pdf-&gt;writeHTML($html, true, false, true, false, '');
  
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  
  // reset pointer to the last page
  $pdf-&gt;lastPage();
  
  // ---------------------------------------------------------
  
  //Close and output PDF document
  $pdf-&gt;Output('example_061.pdf', 'I');
  </code></pre>
  
  <p>this is my html code</p>
  
  <pre><code> &lt;!-- EXAMPLE OF CSS STYLE --&gt;
        &lt;!DOCTYPE HTML&gt;
        &lt;style&gt;
          table{
              border:1px solid #C0C0C0;
              border-collapse:collapse;
  
          }
          tr{ 
          }
          td {
              border:1px solid #C0C0C0; 
  
          }
  
      &lt;/style&gt; 
  
      &lt;table  id="BA1"&gt;
      &lt;tr style=" visibility:hidden;"  &gt;
      &lt;td height= "1" &gt;&lt;/td&gt;
      &lt;td height= "1"  class="ui-resizable" style="width: 39px;"&gt;&lt;/td&gt;
      &lt;td height= "1"  class="ui-resizable" style="width: 76px;"&gt;&lt;/td&gt;        
      &lt;td height= "1"  class="ui-resizable" style="width: 33px;"&gt;&lt;/td&gt;
      &lt;td height= "1"  class="ui-resizable" style="width: 132px;"&gt;&lt;/td&gt;
      &lt;td height= "1"  class="ui-resizable" style="width: 345px;"&gt;&lt;/td&gt;
      &lt;/tr&gt;   
      &lt;tr&gt;&lt;td class="ui-resizable" style="height: 10px; visibility: hidden;"&gt; &lt;/td&gt;       
      &lt;td class="" style=" font-size: 10px;"&gt;編號&lt;/td&gt;
      &lt;td&gt;&lt;/td&gt;
      &lt;td class="" style="font-size: 10px;"&gt;姓名&lt;/td&gt;
      &lt;td&gt;&lt;/td&gt;&lt;td class="" style=" font-size: 10px;"&gt;公布欄&lt;/td&gt;&lt;/tr&gt;
      &lt;tr&gt;&lt;td class="ui-resizable" style="height: 10px; visibility: hidden;"&gt;&lt;/td&gt;
      &lt;td colspan="3" rowspan="1" class="" style=" font-size: 10px;"&gt;繳費項目&lt;/td&gt;    &lt;td class="" style="font-size: 10px;"&gt;金額&lt;/td&gt;&lt;td colspan="1" rowspan="2"&gt;&lt;/td&gt;&lt;/tr&gt;     
      &lt;tr&gt;&lt;td class="ui-resizable" style="height: 134px; visibility: hidden;"&gt;&lt;/td&gt;       
      &lt;td colspan="4" rowspan="2"&gt;&lt;/td&gt;&lt;/tr&gt;  
      &lt;tr&gt;&lt;td class="ui-resizable" style="height: 92px; visibility: hidden;"&gt;&lt;/td&gt;
      &lt;td colspan="1" rowspan="2"&gt;&lt;/td&gt;&lt;/tr&gt;
      &lt;tr&gt;&lt;td class="ui-resizable" style="height: 17px; visibility: hidden;"&gt;&lt;/td&gt;
      &lt;td colspan="4" rowspan="1" class="" style=" font-size: 10px;"&gt;合計：&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
  </code></pre>
  
  <p>If do not support this property</p>
  
  <p>There is no other way recommended？</p>