To get the id of a CSSStyleDeclaration object

Hi, I hope somebody can help me.
I have a selected object

#imgC1 {position:absolute; left:500; top:200; width:200; border:solid black 1px;z-index:2}

var imgObj = window.event.srcElement (of type IMG)
var selectedObj = imgObj.parentElement.style (of type CSSStyleDeclaration)

Now when the image is clicked it can be dragged.

I want to get the id of the selectedObj (imgC1). I can get the text between the curly braces using selectedObj.cssText but I can't find a way to get the id. Any ideas?

Thanks in advance
Brian

use name instead of id for this.