gecko-dev/dom/public/idl/css/CSSStyleDeclaration.idl

interface CSSStyleDeclaration {
 /* IID: { 0xa6cf90be, 0x15b3, 0x11d2, \
  { 0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32 } } */

           attribute DOMString        cssText;
                                        // raises(DOMException) on setting

  DOMString          getPropertyValue(in DOMString propertyName);
  CSSValue           getPropertyCSSValue(in DOMString propertyName);
  DOMString          removeProperty(in DOMString propertyName)
                                        raises(DOMException);
  DOMString          getPropertyPriority(in DOMString propertyName);
  void               setProperty(in DOMString propertyName, 
                                 in DOMString value, 
                                 in DOMString priority)
                                        raises(DOMException);
  readonly attribute unsigned long    length;
  DOMString          item(in unsigned long index);
  readonly attribute CSSRule          parentRule;

};