commandLink and onclick event

I think return false aborts the form submission.

________________________________

From: Rønnevik, Eivind [mailto:eivindkadme.com]
Sent: Mon 31-Jul-06 9:28 AM
To: usersmyfaces.apache.org
Subject: commandLink and onclick event


Hi!
 
Can anyone tell me why something like this would work:
<t:commandLink value="#{messages.deleteRow}"
action="#{selectRowHandler.deleteRow}"
onclick="if (!confirm('Are you sure you want to
delete this record?')) return" />

But that a similar approach (firing the java script AND the
action) doesn't?
 <t:commandLink value="#{messages.viewInfo}"
action="#{selectRowHandler.setSelectedItem}"
onclick="openPopupWindow(this); return false;"
>
        <t:updateActionListener
property="#{selectRowHandler.selectedItem}"
value="#" />
</t:commandLink>

Basically, the first link fires BOTH the javascript and the
action, but the second one fires only the javascript. Why
should the contents of the script have something to say for
if the action is triggered or not?

I thought that the commandLink was capable of triggering
both, anybody have some experiences with this?

Regards, 

Eivind