function goClickCalendar() {
    var selectedDates = jQuery('#calendar').dpGetSelected();
    var cityOrPost = jQuery("[id$='zipcode1']").val();
    
    if (selectedDates.length == 2) {
        if (cityOrPost == "" || cityOrPost == "ENTER YOUR ZIPCODE") {
            
            jQuery('#infoEvent').attr('style', 'display:none');
            jQuery('#errorEvent').attr('style', 'display:none');
            jQuery('#errorCityOrPost').attr('style', 'display:block').attr('style', 'padding-top:3px');
            return;
        }
        var start = escape(selectedDates[0].asString());
        var end = escape(selectedDates[1].asString());
        location.href = 'event-calendar.aspx?startDate=' + start + '&endDate=' + end+'&cityOrPost='+cityOrPost;
    }
    else {
        jQuery('#infoEvent').attr('style', 'display:none');
        jQuery('#errorCityOrPost').attr('style', 'display:none');
        jQuery('#errorEvent').attr('style', 'display:block').attr('style', 'padding-top:3px');
    }
}