Joomla tooltip and Joomla calendar code

Joomla Tooltip code:
<?php
JHTML::_('behavior.tooltip');
$tooltip='asdf';
$title='zxcv';
echo JHTML::_('tooltip', $tooltip, $title, 'warning.png');
?>
Joomla Calendar code:

<?php
echo JHTML::calendar('','date','inputdate','%d-%m-%Y');
?>