<p>
{{#if customer.firstName}}
Hello, {{customer.firstName}}
{{else}}
Hello,
{{/if}}
</p>

<p>
<div id='uniq id' text='{{#if customer.firstName}}'>
Hello, customer.firstName
</div>
<div id='uniq id' text='{{else}}' hiddenState='on'>
Hello,
</div>
</p>

<p>
<table>
<tr>
  {{#if customer.firstName}}
  <td>
   blah blah
  </td>
</tr>
</table>
</p>

<p>
<div id='uniq id' text='{{#if customer.firstName}}'>
  Hello, customer.firstName
</div>
<table>
  <tr>
    <td>
     blah blah
    </td>
  </tr>
</table>
</p>