google maps api v3 custom icons hack for Internet Explorer

gistfile1.js

         var point = xxx; // set from geolocation

          var image = new google.maps.MarkerImage(
            map_icon,
            new google.maps.Size(18,29),
            new google.maps.Point(0,0),
            new google.maps.Point(0,29)
          );

          var marker = new google.maps.Marker({
            draggable: true,
            raiseOnDrag: false,
            icon: image,
            map: map,
            position: point
          });

          // Stop the 'drag' event, and put the marker right back where it was.
          google.maps.event.addListener(marker, 'drag', function(e) {
            e.stop();
            marker.setPosition(point);
          });