set_media(array()); $this->set_rulesets(new CSSStylesheetRulesetCollection()); } function add_medium($value) { $this->_media[] = $value; } function add_rulesets($ruleset) { $this->_rulesets->append($ruleset); } function get_media() { return $this->_media; } function get_rulesets() { return $this->_rulesets; } function set_media($value) { $this->_media = $value; } function set_rulesets(&$value) { $this->_rulesets =& $value; } } ?>