2.1.2 [DOM Level 2 - Style] Section 1.3, Document Extensions


The specification states:

    The LinkStyle interface provides a mechanism by which a style sheet can be 
 retrieved from the node responsible for linking it into a document. An instance of 
 the LinkStyle interface can be obtained using binding-specific casting methods on 
 an instance of a linking node (HTMLLinkElement, HTMLStyleElement or 
 ProcessingInstruction in DOM Level 2).

Quirks Mode, IE7 Mode, and IE8 Mode (All Versions)

The LinkStyle interface is not supported.