function setTzoffsetfrom( $value, $params=FALSE ) {
    $this->tzoffsetfrom['value']   = $value;
    if( empty( $this->tzoffsetfrom['value'] ))
      return;
    $this->tzoffsetfrom['params'] = $this->_setParams( $params );
  }
function setTzoffsetfrom( $value, $params=FALSE ) {
    $this->tzoffsetfrom['value']   = $value;
    if( empty( $this->tzoffsetfrom['value'] ))
      return;
    $this->tzoffsetfrom['params'] = $this->_setParams( $params );
  }
function setTzoffsetfrom ( $ value , $ params = FALSE ) { $ this -> tzoffsetfrom [ 'value' ] = $ value ; if ( empty ( $ this -> tzoffsetfrom [ 'value' ] ) ) return ; $ this -> tzoffsetfrom [ 'params' ] = $ this -> _setParams ( $ params ) ; }
set calendar component property tzoffsetfrom

@author Kjell-Inge Gustafsson <ical@kigkonsult.se>
@since 1.x.x - 2007-05-25
@param string $value
@param string $params optional
@return void
set calendar component property tzoffsetfrom