Open a hidden div in a lightbox with Mootools in Joomla 1.5 - joomla

Question

I am using Joomla 1.5.22 with Mootools 1.1. I have a module with a form contained in a hidden div that I want to open in Joomla's built in modal box. The problem I have is that when I click the link the form opens in the modal box, but it also opens the div in the module on the page.
HTML:
<div id="moduleBox">
<div id="clickMeButton"><a id="formClick" class="modal" href="#hiddenForm">Click me</a></div>
<div id="hiddenForm">
form code goes here
</div>
</div>
Javascript:
window.addEvent('domready', function() {
$('formClick').addEvent('click', function(){
$('hiddenForm').setStyle('display','block');
});
});
So how do I get the form to only show up in the modal box?
You can see what I am talking about here - http://www.internextion.com/
It's the Call Back Module. I already added the handler: 'adopt' as suggested below, now the result is a little different. The target div still shows up below the link, but now the modal window contains the link rather than the target.

Answer 1

I think this uses Harald's SqueezeBox - in which case, you are looking at the following scenarios:
find the target div and CLONE it to insert into the modal box.
find the target div and ADOPT it into the modal box.
you are seeing the first (default) case. to achieve the second effect, add:
handler: 'adopt'
to the instantiation options. more here: http://digitarald.de/project/squeezebox/1-1/showcase/get-elements/

Answer 2

Option 1:
If you look at the html code (in firebug) for the overlay div you will see that it makes a "copy" of html and places inside the overlay container with id="sbox-content". In theory if you add a CSS like below +/-, it will hide the link and display everything else. This might be the simplest and easiest solution.
div#sbox-content > a#formClick{
display: none;
}
Option 2:
If option 1 does not work for some reason, you can try playing with CSS and hide the link when the Modal box opens and then making it visible when it closes.
Modify the JS to add a class instead of modifying the style.
window.addEvent('domready', function() {
$('formClick').addEvent('click', function(){
$('formClick').addClass('hidden');
$('hiddenForm').setStyle('display','block');
});
});
Load additional CSS that will make the link invisible
div#clickMeButton.hidden {
display: none;
}
Then you will have to overload closing event and make the link visible...

Answer 3

Ok, so I finally got it to work with a combination of the other answers given. First, I removed the javascript click event to make the form appear, that solved the issue of the form showing up below the link. Next, I added new CSS for the hiddenForm ID within the modal box and set that to display:block. It appears that the default handler behavior (in Joomla at least) is to adopt the content since I have removed the handler: 'adopt' and it is still adopting the content.
I knew it was something simple, thanks for the help!
BTW - the link is still live, you can see the correct behavior on the demo site. Now all I need to do is add some fancy AJAX form submission and it will be ready for prime time.