CSSStyleSheet JDK 1.6)

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public void deleteRule (int index) throws DOMException

Used to delete a rule from the style sheet.

public CSSRuleList getCssRules ()

The list of all CSS rules contained within the style sheet.

public CSSRule getOwnerRule ()

If this style sheet comes from an @import rule, the ownerRule attribute will contain the CSSImportRule.

If this style sheet comes from an @import rule, the
ownerRule attribute will contain the
CSSImportRule. In that case, the ownerNode
attribute in the StyleSheet interface will be
null. If the style sheet comes from an element or a
processing instruction, the ownerRule attribute will be
null and the ownerNode attribute will
contain the Node.

public int insertRule (String rule, int index) throws DOMException

Used to insert a new rule into the style sheet.

Used to insert a new rule into the style sheet. The new rule now
becomes part of the cascade.
Returns: The index within the style sheet's rule collection of the newly inserted rule.
Parameters:
- rule - The parsable text representing the rule. For rule sets this contains both the selector and the style declaration. For at-rules, this specifies both the at-identifier and the rule content.
- index - The index within the style sheet's rule list of the rule before which to insert the specified rule. If the specified index is equal to the length of the style sheet's rule collection, the rule will be added to the end of the style sheet.
Throws:
- DOMException - HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the specified index e.g. if an @import rule is inserted after a standard rule set or other at-rule.
INDEX_SIZE_ERR: Raised if the specified index is not a valid insertion point.
NO_MODIFICATION_ALLOWED_ERR: Raised if this style sheet is readonly.
SYNTAX_ERR: Raised if the specified rule has a syntax error and is unparsable.