public function setListener()
{
$js = 'google.maps.event.addDomListener(' . $this->_tst . ', \'DOMMouseScroll\', CancelEventPhocaMap);' . "\n" . 'google.maps.event.addDomListener(' . $this->_tst . ', \'mousewheel\', CancelEventPhocaMap);';
return $js;
}