http://www.vrbo.com/icalendar/1b459217f3874fd4a05cd5539838d7ad.ics                            <form method="post" action="https://www.holidayrentalsbyowner.com/importcalendar/importurlvrbo" name="myForm" id="myForm">
                			 <input  type="hidden" name="vrboproid" value="19768">
                             <input value="http://www.vrbo.com/icalendar/1b459217f3874fd4a05cd5539838d7ad.ics" name="vrbourl" id="vrbourl" type="hidden">
                			 <input type="submit" class="login_btn" name="importvrbo" value="Sync Now" required=""  style="display:none" > 
                			 </form>
                			 
                			 <script type="text/javascript">
    window.onload=function(){
        var auto = setTimeout(function(){ autoRefresh(); }, 100);

        function submitform(){
          //alert('test');
          document.forms["myForm"].submit();
        }

        function autoRefresh(){
           clearTimeout(auto);
           auto = setTimeout(function(){ submitform(); autoRefresh(); }, 10000);
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</script>