function showhideDatePicker (chkInput, divLayerName) {
	
	if (document.getElementById(chkInput).checked) {		
		document.getElementById('poll_dateended').value = poll_dateended_Object.picked.formatted;
		document.getElementById(divLayerName).style.display = 'block'
	}
	else
	{
		document.getElementById('poll_dateended').value = '';
		document.getElementById(divLayerName).style.display = 'none'
	}	

}