title: How to print "" if value of variable is null?
body: <p>I'm rendering some HTML in which I inject the value of a textbox with javascript.
  See: {$T.blob.title}</p>
  
  <pre><code>&lt;input type="text" maxlength="40" size="16" id='imgtitle_{$T.blob.Id}' value='{$T.blob.title}' class="imagetitleinput" /&gt;&lt;br /&gt;
  </code></pre>
  
  <p>However, this string may be null so the textbox shows the value <code>"null"</code> to the visitor.
  How can I check (preferably inline) if the value of <code>{$T.blob.title}</code> is <code>null</code> and if so set the value of this textbox to <code>""</code>?</p>
  
  <p>I'm using this template engine: <a href="http://jtemplates.tpython.com/" rel="nofollow">http://jtemplates.tpython.com/</a></p>