title: HtmlOptions.OnLoadScript doesnt works to create PDF with ABCPdf
body: <p>I have a html page created with bootstrap, and i want to create a PDF with it and for this i'm using ABCPdf.
  I'm trying to execute a javascript script to apply some styles to my html, but it doesn't works. Someone knows what happens?</p>
  
  <pre><code>     Doc theDoc = new Doc();
       theDoc.Rect.Inset(5, 20);
       theDoc.HtmlOptions.Timeout = 3000000; 
       theDoc.HtmlOptions.UseScript = true;
       theDoc.HtmlOptions.PageCacheEnabled = false;
       theDoc.HtmlOptions.DoMarkup = true;
       theDoc.HtmlOptions.HostWebBrowser = false;
       theDoc.HtmlOptions.Media = MediaType.Screen;
       theDoc.HtmlOptions.BrowserWidth = 1500;
       theDoc.HtmlOptions.AddLinks = true;
       string script = @"var elemento = document.getElementById('description');"
                        +"for (i = 0; i &lt; elemento.childNodes.length; i++) {"
                        +    "if (elemento.childNodes[i].className == 'row') {"
                        +       " if (elemento.childNodes[i].offsetHeight &gt; 200) {"                                    
                                       +            "elemento.childNodes[i].className += ' saltoPagina';  }  }  }";
  
      theDoc.HtmlOptions.OnLoadScript = script;
      int theID;
      theID = theDoc.AddImageUrl(url, true, 0, true);
  </code></pre>
  
  <p>Thanks in advance. :)</p>