rules | NN n/a IE 4 DOM n/a
A collection of all rules defined or imported for a styleSheet object. Collection members are sorted in source code order. Internet Explorer lets you use array notation or parentheses to access a single row in the collection (e.g., document.all.myTable.rows[0], document.all.myTable.rows(0)). Unlike some other collections that have methods for adding or removing items, a styleSheet object's rule is added via methods of the styleSheet object.
Object Model Reference
IE | document.all.styleSheetID.rules

length | NN n/a IE 4 DOM n/a
| Read-only
Returns the number of elements in the collection.
Example
    var howMany = document.all.mySheet.rules.length
Value Integer.