how to call joomla calendar and tooltip warning image

how to call joomla calendar and tooltip warning image

JHTML::_('behavior.tooltip');
$tooltip='if you not a register user please register. ';
$title='Register';
echo JHTML::_('tooltip', $tooltip, $title, 'warning.png');
?>

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