[Dynapi-Help] stop drag event listener?

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Hey all,
 I'm new to the list, but I hope to get involved more.  I'm trying to
develop a site that using some sort of DHTML engine in order to
implement a layering system.  My goal is to create a new interface that
will load a set of layers:

Each layer will have a Z+ icon to increase it's Z index, a Z- icon to
decrease it's Z index, and an X icon to "close" the layer.  There will
be a lock layers icon and a unlock layers icon that will globally
lock/unlock all layers to their current positions.  The goal is to use
this to allow users to reconfigure orderoutfood.com to their tastes.
Layer would be a 
shopping cart layer, a restaurant selection layer, a menu selection
layer, a product review layer, etc.  Eventually, this layers will be
docking to allow smoother connections; however, write now having them
"float" is fine.  Currently, I have this code to create a layer;
however, how do I add a listener to detect after a drag was performed.
The reason I need to do this is so that I can update a cookie with the
layer's name/position so they can be read back when the user loads.
Eventually, a database will be tied to this and when you "lock the
layers" it'll open a popup-window, contact the server, and store your
preferences with requiring a new page load.  However, for now, cookies
will work fine.  Any idea how to detect a stopDragEvent type event with
DynAPI, or has one not been implemented yet.

---snip---
<html>
<body bgcolor=#000000 text=#ffffff>
<title>reconfigurable website</title>

<script language="JavaScript" src="../src/dynapi.js"></script>
<script language="Javascript">
dynapi.library.setPath('../src/dynapi/');
dynapi.library.include('dynapi.api');
dynapi.library.include('DragEvent');
</script>

<script language="Javascript">

DynAPI.onLoad(function() {

 block = new DynLayer();
 block.setSize(300,300);
 block.setLocation(100,100);
 block.setBgColor("red");
 DragEvent.enableDragEvents(block);
 block.setHTML("<table cellspacing=0 cellpadding=0 width=100%><tr><td
bgcolor=yellow width=100%><p align=right><a
href=\"javascript:block._remove();\"><img src=bx.gif
border=0></a></p></td></tr><tr><td>This is an example
layer.</td></tr></table>");

 DynAPI.document.addChild(block);
});

//-->
</script>

<p align=right><a
href="javascript:DragEvent.disableDragEvents(block);">lock layers</a><a
href="javascript:DragEvent.enableDragEvents(block);">unlock
layers</a></p>

</html>
---snip---
Regards, 
Art Dardia 
_____________________________________________
Computer Science and Computer & Systems Engineering
Rensselaer Polytechnic Institute
284 Pawling Ave., Troy, NY 12180 USA 
phone: (518) 271-6521 :: cell: (973) 626-6819