[xwiki-devs] Creating New Custom Plugin / Object Class Which Contains CSS Based ImageMap

Hi All, I'm currently investigating using XWiki to create a custom application, for this application I'll need to create a CSS based ImageMap plugin, where when you move over a certain area a popup note will be displayed. I guess from an architcture perspective I need to create a custom object which contains the functionality to display itself, and query another custom object which contains co-ordinates and text details which are attached to this object. That bit I get, however the bit I'm having some trouble with is how I would go about adding css details to the custom object for display purposes, if anyone could point me in the direction of a tutorial or give me some guidance I'd really appreciate it ? At the moment I'm not so worried about creating an editor for mapping notes to co-ordinates, it's probably something to look at for the future tho, I also need to be able to export the details to XML, again, this step I'm not sure of since I can't find any tutorials or information on modifying the exports... Any help or links to good information are much appreciated.... Thanks, Derek