use strict + a bug was fixed thanks to it

scripts/article.js

@@ -1,4 +1,5 @@
 (function() {
+"use strict";
 var what = [
         sim.location.custom.coordsJS,
         sim.location.custom.name,

scripts/bindings.js

@@ -1,4 +1,5 @@
 /// Different custom bindings
+"use strict";
 
 (function() {
 var rotateDiv = function(div, angle) {

scripts/blueskies.js

@@ -1,4 +1,5 @@
 (function() {
+"use strict";
 ////// Parameters
 // Canopy modes
 var horizontalSpeeds = [0, 2.5, 5, 7.5, 10],
@@ -145,9 +146,8 @@ function computeLandingPattern(location, wind, pattern) {
 
         result = [location];
     for (var i = 0; i < controlPointAltitudes.length; i++) {
-        time = (controlPointAltitudes[i] - prevAltitude) / speedV;
-
-        var point = moveInWind(prevPoint, windSpeed, windDirection, speedH, heading[i], -time); // Note that we specify the wind speed and canopy heading as though we're flying the pattern. But we give negative time, so we get the point where we need to start to arrive where we need.
+        var time = (controlPointAltitudes[i] - prevAltitude) / speedV,
+            point = moveInWind(prevPoint, windSpeed, windDirection, speedH, heading[i], -time); // Note that we specify the wind speed and canopy heading as though we're flying the pattern. But we give negative time, so we get the point where we need to start to arrive where we need.
 
         prevPoint = point;
         prevAltitude = controlPointAltitudes[i];
@@ -164,5 +164,4 @@ window.getCanopyVerticalSpeed = getCanopyVerticalSpeed;
 window.computeLandingPattern = computeLandingPattern;
 window.computeReachSet = computeReachSet;
 window.lastReachSetSteps = lastReachSetSteps;
-
 })();

scripts/index.js

@@ -1,4 +1,5 @@
 (function () {
+"use strict";
     sim.persistence.init();
     parseParameters(sim);
     ko.applyBindings(sim);

scripts/loc.js

@@ -1,4 +1,5 @@
 (function() {
+"use strict";
 var enResources = {
         "ms": "m/s",
         "paused": "(paused)",

scripts/tutor.js

@@ -1,3 +1,4 @@
+"use strict";
 function startTutor(id) {
     var allDialogs, // List of all dialog objects, populated from html automagically
         nextDialogIndex;

scripts/ui.js

@@ -1,3 +1,4 @@
+"use strict";
 // Time
 var updateInterval = 20.0,
     headingUpdateSpeed = Math.PI / 4, // Radians __per second__

scripts/util.js

@@ -1,3 +1,4 @@
+"use strict";
 function degToRad(deg) {
     return deg * Math.PI / 180;
 }

scripts/viewmodel.js

@@ -1,4 +1,5 @@
 (function() {
+"use strict";
 function SimulatorViewModel() {
     var self = this;
     var dropzones = {