该导航栏是否对SEO不利

 <div align=\"right\" id=\"menu\">
        <table border=\"0\" cellpadding=\"0\" cellspacing=\"0\">
           <tr>
             <td><div align=\"center\" class=\"menuitem1\" onmouseover=\"this.className=\'menuitem1a\'\" onmouseout=\"this.className=\'menuitem1\'\" onclick=\"window.location=\'index.php\'\"  >
                     <div style=\"margin-top:80px\">Profile</div>
                 </div></td>
             <td><div align=\"center\" class=\"menuitem2\" onmouseover=\"this.className=\'menuitem2a\'\" onmouseout=\"this.className=\'menuitem2\'\" onclick=\"window.location=\'customers.php\'\">
                    <div style=\"margin-top:80px\">Customers</div>
                    </div></td>
             <td><div align=\"center\" class=\"menuitem3c\">
                    <div style=\"margin-top:80px\">Services</div>
                    </div></td>
             <td><div align=\"center\" class=\"menuitem4\" onmouseover=\"this.className=\'menuitem4a\'\" onmouseout=\"this.className=\'menuitem4\'\" onclick=\"window.location=\'products.php\'\">
                    <div style=\"margin-top:80px\">Products</div>
                    </div></td>
             <td><div align=\"center\" class=\"menuitem5\" onmouseover=\"this.className=\'menuitem5a\'\" onmouseout=\"this.className=\'menuitem5\'\" onclick=\"window.location=\'contact.php\'\">
                     <div style=\"margin-top:80px\">Contact</div>
                     </div></td>
           </tr>
        </table>
    </div>