if (tag.HasParam(wxT("BGCOLOR")))
     {
         tag.GetParamAsColour(wxT("BGCOLOR"), &m_tBkg);
-        if (m_tBkg.Ok())
+        if (m_tBkg.IsOk())
             SetBackgroundColour(m_tBkg);
     }
     if (tag.HasParam(wxT("VALIGN")))
         {
             wxString wd = tag.GetParam(wxT("WIDTH"));
 
-            if (wd[wd.length()-1] == wxT('%'))
+            if (!wd.empty() && wd[wd.length()-1] == wxT('%'))
             {
                 if ( wxSscanf(wd.c_str(), wxT("%i%%"), &m_ColsInfo[c].width) == 1 )
                 {
         wxColour bk = m_rBkg;
         if (tag.HasParam(wxT("BGCOLOR")))
             tag.GetParamAsColour(wxT("BGCOLOR"), &bk);
-        if (bk.Ok())
+        if (bk.IsOk())
             cell->SetBackgroundColour(bk);
     }
     if (m_Border > 0)
             {
                 if (tag.HasParam(wxT("WIDTH")))
                 {
-                    wxString wd = tag.GetParam(wxT("WIDTH"));
-
-                    if (wd[wd.length()-1] == wxT('%'))
-                    {
-                        int width = 0;
-                        wxSscanf(wd.c_str(), wxT("%i%%"), &width);
-                        m_Table->SetWidthFloat(width, wxHTML_UNITS_PERCENT);
-                    }
-                    else
+                    int width = 0;
+                    bool wpercent = false;
+                    if (tag.GetParamAsIntOrPercent(wxT("WIDTH"), &width, wpercent))
                     {
-                        int width = 0;
-                        wxSscanf(wd.c_str(), wxT("%i"), &width);
-                        m_Table->SetWidthFloat((int)(m_WParser->GetPixelScale() * width), wxHTML_UNITS_PIXELS);
+                        if (wpercent)
+                        {
+                            m_Table->SetWidthFloat(width, wxHTML_UNITS_PERCENT);
+                        }
+                        else
+                        {
+                            m_Table->SetWidthFloat((int)(m_WParser->GetPixelScale() * width), wxHTML_UNITS_PIXELS);
+                        }
                     }
                 }
                 else