title: Can I hide the text box value if the value is 0?
body: <p>Please help I am able to do all the calculations I need as long as I make certain text boxes default value 0 but I do not want these boxes to show a 0 if nothing is put in them. Can I hide the text box if the value is 0? there are servral text boxs in the sheet.</p>
  
  <p><strong>Edit:</strong></p>
  
  <p>Op wants also to validate form ,no <code>submit()</code> if values are not numbers or are empty.</p>