CSSPropertyHandler(false, true); $this->_default_value = Value::fromString("0"); } function default_value() { return $this->_default_value; } function parse($value) { $value = trim($value); if ($value === 'inherit') { return CSS_PROPERTY_INHERIT; }; if ($value === 'normal') { return $this->_default_value; }; return Value::fromString($value); } function get_property_code() { return CSS_LETTER_SPACING; } function get_property_name() { return 'letter-spacing'; } } CSS::register_css_property(new CSSLetterSpacing); ?>