title: Google Maps API v3 won't disable scroll wheel after map loads
body: <p>I'm implementing google maps on a website and everything is working great, except that I can't seem to be able to disable the scrollwheel after the maps has loaded.  If I set the option before the map loads to scrollwheel: false, then the scroll wheel is disabled, but if I try and do it later (I have a checkbox that enables/disables the scroll wheel).</p>
  
  <p>Here are my options for the google map on page load:</p>
  
  <pre><code>var myOptions = {
              zoom: 15,
              center: currentPosition,
              draggable: true,
              scrollwheel: true,
              mapTypeId: google.maps.MapTypeId.ROADMAP
          };
  </code></pre>
  
  <p>map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);</p>
  
  <p>and then after the click event has trigger on the checkbox, I have the following code to disable the scrollwheel.  funny enough, the draggable = false is working and prevents me from dragging the map.</p>
  
  <pre><code>var checked = $('#chkPin').is(':checked');
          log("map active: " + checked);
          if (checked) {
              map.scrollwheel = false;
              map.draggable = false;
              map.zoomControl = false;
          } else {
              map.scrollwheel = true;
              map.draggable = true;
              map.zoomControl = true;
          }
  </code></pre>