Cartodb Infobox on same place

I have a question related to the cartodb infobox. I want it to always appear on the same place on the map even if a click on a point that is not in the center (where I want to to open). I am using the cartodd.js library and google API one. I am here seeking for help since I am not an expert in programming.

      var map;
      var google_api_key = "ljkjGcnvIaN-4HXq45A7Q-HD"
      function main() {
        //var google_api_key = "ljkjGcnvIaN-4HXq45A7Q-HD"

          // Map center
          var myLatlng = new google.maps.LatLng(42.358, -71.07);
          var myOptions = {
            zoom: 14,
            center: myLatlng, 
            disableDefaultUI: true,
            zoomControl: true,
            mapTypeId: google.maps.MapTypeId.ROADMAP
          }
          // Render basemap
          map = new google.maps.Map(document.getElementById("map"), myOptions);



        // Put layer data into a JS object
      var layerSource = 'http://ift.tt/1vWhvnO';


        // For storing the sublayers
      var sublayers = [];

    var cdbOptions = {
            cartodb_logo: false,
            mobile_layout: true
          }
      // Add data layer to your map
      cartodb.createLayer(map,layerSource, cdbOptions)
          .addTo(map)
          .done(function(layer) {
             //console.log(layer);   
             var num_sublayers = layer.getSubLayerCount();

             for (var i = 0; i < num_sublayers; i++) {
                sublayers[i] = layer.getSubLayer(i);
                //console.log(sublayers[i]); 
              } 


            var sublayer0Shown = true;
              $("#sublayer0").on('click', function() {
              if (sublayer0Shown) {
                  sublayers[0].hide();
                  sublayers[1].hide();
                  $("#switch1").removeClass('right switch enabled');
                  $("#switch1").addClass('right switch disabled');

                } else {
                  sublayers[0].show();
                  sublayers[1].show();
                  $("#switch1").removeClass('right switch disabled');
                  $("#switch1").addClass('right switch enabled');
                }
                sublayer0Shown = !sublayer0Shown; 
              });

            var sublayer1Shown = true;
              $("#sublayer1").on('click', function() {
              if (sublayer1Shown) {
                  sublayers[2].hide();
                  sublayers[3].hide();
                  $("#switch2").removeClass('right switch enabled');
                  $("#switch2").addClass('right switch disabled');
                } else {
                  sublayers[2].show();
                  sublayers[3].show();
                  $("#switch2").removeClass('right switch disabled');
                  $("#switch2").addClass('right switch enabled');
                }
                sublayer1Shown = !sublayer1Shown; 
              });


          })
          .error(function(err) {
              console.log("error: " + err);
          });



  }

  window.onload = main;

</script>