Execute a script and show results in the same page that called it

[American horizo]

I've created a simple form that allow to insert a word and search it into a database

<form method="post" action="cerca_ragione_sociale.asp">
 <label>Inserisci ragione sociale</label>
   <input name="chiave"/>
  <label> 
  
  <input type="submit"/>
</form> 

the problem is that the result is opened into a new page, while i want to show it in the same page of the form

I want to precise that i can do it throught javascript, but what i want to know if is it possibile to do it simple changing come parameter of the submit button.