datepicker.js

$(function(){
	$.datepicker.setDefaults( $.datepicker.regional[ "ja" ] );
	$(".datepicker").datepicker({
		beforeShow: function (input, inst) {
			var $this = $(input);
			var begin = $this.data('begin') || '';
			if (begin) {
				$this.datepicker("option", "minDate", $(begin).val());
			}
			var end = $this.data('end') || '';
			if (end) {
				$this.datepicker("option", "maxDate", $(end).val());
			}
		},
		onSelect: function (dateText, inst) {
			var $this = $(inst.input);
			var begin = $this.data('begin') || '';
			if (begin) {
				$(begin).datepicker("option", "maxDate", dateText);
			}
			var end = $this.data('end') || '';
			if (end) {
				$(end).datepicker("option", "minDate", dateText);
			}
		},
	});

	$('[data-toggle=datepicker]').each(function () {
		var target = $(this).data('target') || '';
		if (target) {
			$(this).bind("click", function () {
				$(target).datepicker("show");
			});
		}
	});
});