Confirmation button on submit

I'm a little confused here

I've got a little javascript function for popping up a simple alert box on a link click what I want to do though is to change it from a link to a button in a form.

I've tried making it a <form onSubmit=""> and also tried putting it in the submit onClick it works fine if i have it on a normal href as an onClick just not in the form/button combination what/where am i going wrong :confused:

Javascript

// confirm unassign
function confirmunassign(){
msg = "You are about to unassign this lead are you sure you wish to do this";
return confirm(msg);
}


Form

<form id="editform" name="editform" action="dashboard.php?LoadModule=leads&action=edit&cid=<?php echo $_GET['cid'];?>&Subs=<?php echo $_GET['Subs']?>" method="post">
<input class="button" type="submit" name="actionbutton" id="actionbutton" value="Edit" onClick="return confirmunassign()" />
</form>


Basically if they click no/cancel it needs to not do the submit or if they click ok then it does the submit.

Any help would be much appreciated

What are you trying to do
Are you trying to bring up a pop up box when they submit some thing to confirm the submit

If so use window.open() on a button not a submit

<input type="button" value="Continue" onClick="window.open('bla','bla','bla');" />


Then use the parent.document.getElementById("FORM ID").submit(); on a button in your pop up

And the Cancel just closed the window window.colse(); i think

Do not hold my script up to work im still learning but i think that is how you do it if not im sure some one will correct me

not trying to open a popup thats easy :) i'm trying to use the alert box
it pops up like this when put on a normal href now i'm just trying to get it to do the same on a submit button :)

http://www.furious-angels.com/imagehosting/1489b0cb4de496.jpg

oo the system box
one min

<script type="text/javascript">
// confirm unassign
function confirmunassign(){
msg = "You are about to unassign this lead are you sure you wish to do this";
return confirm(msg);
}
</script>
<form id="editform" name="editform" onsubmit="return confirmunassign();" action="dashboard.php?LoadModule=leads&action=edit&cid=<?php echo $_GET['cid'];?>&Subs=<?php echo $_GET['Subs']?>" method="post">
<input class="button" type="submit" name="actionbutton" id="actionbutton" value="Edit" />
</form>

tried that already it doesn't work not popping up box and still completing form post :(

edit: had onsubmit after action="" moved it to before and it works now.

thanks

Still on a Button in HTML
if (confirm("Yes or no")) {//if yes
document.getlElementById("FORM NAME").submit();
}
else { // if no
history.go(-1);
}

edit: had onsubmit after action="" moved it to before and it works now.
The order of attributes doesn't make any difference, you might had missed a quote or something.