Code referece:
http://stackoverflow.com/questions/8335456/magento-how-do-i-add-a-frontend-date-picker-that-returns-dd-mm-yy-instead-of-m
STEPS:
1. Add js and css necessary for the datepicker in frontend
3.call that block in the phtml file where u want to implement datepicker.
http://stackoverflow.com/questions/8335456/magento-how-do-i-add-a-frontend-date-picker-that-returns-dd-mm-yy-instead-of-m
STEPS:
1. Add js and css necessary for the datepicker in frontend
<reference name="head">
<action method="addItem"><type>js_css</type><name>calendar/calendar-win2k-1.css</name><params/><!--<if/><condition>can_load_calendar_js</condition>--></action>
<action method="addItem"><type>js</type><name>calendar/calendar.js</name><!--<params/><if/><condition>can_load_calendar_js</condition>--></action>
<action method="addItem"><type>js</type><name>calendar/calendar-setup.js</name><!--<params/><if/><condition>can_load_calendar_js</condition>--></action>
</reference>
2.
<block type="core/html_calendar" name="html_calendar" as="html_calendar" template="page/js/calendar.phtml"/>
3.call that block in the phtml file where u want to implement datepicker.
<?php echo $this->getChildHtml('html_calendar') ?>
4. Last use the below code:
<script type="text/javascript">
Calendar.setup({
inputField : 'deliverydate',
ifFormat : '%m/%e/%y',
button : 'date_from_trig',
align : 'Bl',
singleClick : true
});
</script>