Address comany information displayed on checkbox select

[alex_ivascu]

Hello, 

 

 

I'm trying to add in address.tpl a checkbox that when is selected will automatically display the input for company and vat number. 

Now the company input is displayed and when something is filled in VAT input will appear automatically.

 

How could I add the checkbox and when selected to display these 2 inputs?

 

I've added the checkbox:

<input type="checkbox" name="pers_fizica" id="pers_fizica" value="PF">
{if isset($smarty.post.pers_fizica) && $smarty.post.pers_fizica == "PF"} checked="checked"{/if}

 

But i don't know how to link it and make the 2 input appear.

 

 

 

Many thanks in advance,

Alex