Anchor instead of submit button

[Lmhelp]

Hello,

Thank you for reading my post.

I would like to replace the following submit button with an anchor:

<input type="submit" value="Submit button 3" name="submit_btn_3" />

Here is my start:

<a href="#" onclick="document.forms[0].submit();">Log out</a>

Note that:
- I have several submit buttons in my form.
- Each submit button has its own "name":

<input type="submit" value="Submit button 1" name="submit_btn_1" />
<input type="submit" value="Submit button 2" name="submit_btn_2" />
<input type="submit" value="Submit button 3" name="submit_btn_3" />

I only want to replace the third submit button with an anchor.

I need to pass the name of the submit to the JavaScript "submit()" function.

Can you tell me how to do that?
Can you point me to the right specification?

Thank you and all the best,
--
Lmhelp