To include this FX in your document you need to put the the following in the HEAD section of your document

<!-- *** BEGIN CUT - Start Code *** -->
<!-- (* Another free JavaScript © from JavaScript-FX.com *) -->
<SCRIPT LANGUAGE="javascript" SRC="javascript/JSFX_Layer.js"></SCRIPT>
<SCRIPT LANGUAGE="javascript" SRC="javascript/JSFX_DragDrop.js"></SCRIPT>
<!-- *** END CUT - End Code *** -->

To make a dragable layer, add the following links to your document BODY.

<A href="#" onClick="JSFX.addDragLayer('<IMG SRC=images/sphere.gif>', 100, 100, 40, 40); return false">add Sphere</A>

Customization.
'<IMG SRC=images/sphere.gif' - This is the content of the dragable layer. Use any valid HTML.
100, 100, 40, 40. - This is the - x,y, width, height - of the dragable layer

Also See...
Using External ".js" Files
Combining Multiple Scripts.