title: jQuery Script Doesn't Work on iOS 5
body: <p>The following script works on all browsers and devices, but since the release of iOS 5 on the iphone, it no longer works.</p>
  
  <p>The following code calculates dates into inputs so I can send them in a form. However, now the dates show up as NaN.</p>
  
  <p>Cant see why.</p>
  
  <pre><code>        function makeUpDates(){
              // concantenate values to date_start and date_end hidden inputs
              var dateString = document.getElementById('date').value,
              date = new Date(dateString);
  
              document.getElementById('date_start').value = date.getFullYear() + '-' + (date.getMonth()+1) + '-' + ("0" + date.getDate()).slice(-2);
  
              var numDays = document.getElementById('slider').value;
              date.setDate(date.getDate() + parseInt(numDays));   
  
              var dateEnd = date.getFullYear() + '-' + (date.getMonth()+1) + '-' + ("0" + date.getDate()).slice(-2);
              document.getElementById('date_end').value = dateEnd;
          }
  </code></pre>