cssRule.parentStyleSheet

Summary

parentStyleSheet returns the object type of style sheet, in which the rule is defined.

stylesheet = cssRule.parentStyleSheet

• stylesheet stylesheet is an object type.

if (bgRule.parentStyleSheet! = MySheet) {
   // Style alien rule!
}

See Gecko DOM Reference: event # DOM_styleSheet_Object for more information about the interface type objects stylesheet.

DOM Level 2 Style - cssRule