/**
 * Function getting how many nights will the persons stay in a selected apartment.
 * Function invokes ajax.
 */
function setApartmentNights() {
	var iApartmentId = document.getElementById('iReservationApartmentId').value;
	postString = "&aid=" + iApartmentId;
	var iDay = document.getElementsByName('sStartDateDay')[0].value;
	var iMonth = document.getElementsByName('sStartDateMonth')[0].value;
	var iYear = document.getElementsByName('sStartDateYear')[0].value;
	postString += "&sBeginDate=" + iYear + "-" + iMonth + "-" + iDay;
	var iDay = document.getElementsByName('sEndDateDay')[0].value;
	var iMonth = document.getElementsByName('sEndDateMonth')[0].value;
	var iYear = document.getElementsByName('sEndDateYear')[0].value;
	postString += "&sEndDate=" + iYear + "-" + iMonth + "-" + iDay;
	jQuery.ajax({
		beforeSend: function() {
			//loaderSearchClient();
			/* deactivating the "continue" button */
			jQuery('#continue_button').attr('disabled','disabled');
			jQuery('#iApartmentCountNights').html('<img src="logic_frontend/templates/site/images/ajax-loader3.gif" />');
		},
		type: "POST",
		url: "ajaxindex.php",
		data: "mod=apart&sec=_ajax_reservation_add_count_nights"+postString,
		success: function(data, status){
			jQuery('#iApartmentCountNights').html(data);
			/* activating the "continue" button */
			jQuery('#continue_button').attr('disabled','');
		}
	});
}