Please help

[tolis]

Please help
I try to create an .asp form and have this problem:
The submit button must first validate the captcha image and then validate the form form correct incertion of data and then send the form by email.
I have now 2 buttons the Test Imput checks the captcha if ture and the Submit checks the form inputs and sends the form. What I try but not suceed is to combine the two buttons to one. The codes are
<input type="submit" name="Submit2" value="Test Input" />
<input type="submit" name="Submit" value="submit" onClick="validate();return returnVal;">

The test page is http://www.herodion.gr/consTest.asp

Please help or suggest somethign else because I am stack