4   var $_properties;  variable in CSSPropertyCollection
10     $this->_properties = array();
30     for ($i = 0, $size = count($this->_properties); $i < $size; $i++) {
31       $property =& $this->_properties[$i];
32       $collection->_properties[] =& $property->copy();
56       $this->_properties[$this->_positions[$code]] = $property;
59       $this->_properties[] = $property;
74     $properties = $this->_properties;
83     return $this->_properties;
90     return $this->_properties[$this->_positions[$code]]->is_important();
99     if (!isset($this->_properties[$this->_positions[$code]])) {
104     $property =& $this->_properties[$this->_positions[$code]];
109     $this->_properties[$this->_positions[$code]]->set_value($value);