function calendar(className, format, lang)
	{
		datumDatepicker = new Array();
		
	  	className = '.' + className;
	  	$(document).ready(function(){
	  		optionsDatepicker = new Array();
			if (lang == 'en') lang = 'en-GB';
			if ($.datepicker.regional[lang] == undefined) lang = 'cs';
			
			optionsDatepicker = {
		          duration:		'fold',
		          flat: 			true,
		          changeFirstDay: true,
		          //firstDay: 		1,
		          showOn: 		"both",
		          dateFormat: 	format,
		          buttonImage: 	"/theme/boudamama/img/kalendar-date.gif",
		          buttonImageOnly:true,
		          changeMonth: 	true,
		          changeYear: 	true,
		          dayNames:		$.datepicker.regional[lang]['dayNames'],
		          dayNamesMin:	$.datepicker.regional[lang]['dayNamesMin'],
		          dayNamesShort:	$.datepicker.regional[lang]['dayNamesShort'],
		          monthNames:		$.datepicker.regional[lang]['monthNames'],
		          monthNamesShort: $.datepicker.regional[lang]['monthNames'],
		          onClose: function() {
		               //$(this).valid();
		               $(this).next().focus();
		         },
		         closeText: $.datepicker.regional[lang]['closeText'],
				prevText: $.datepicker.regional[lang]['prevText'],
				nextText: $.datepicker.regional[lang]['nextText'],
				currentText: $.datepicker.regional[lang]['currentText'],
				weekHeader: $.datepicker.regional[lang]['weekHeader'],
				//dateFormat: 'dd.mm.yy',
				firstDay: $.datepicker.regional[lang]['firstDay'],
				isRTL: false,
				showMonthAfterYear: false,
				yearSuffix: ''
		      };
			 
	      	$(className).datepicker(optionsDatepicker);
	  });
	}