MAPG-180 extract all inline JS into separate JS file

public/static/js/maps.js

@@ -0,0 +1,76 @@
+(function () {
+    var Maps = {
+        descriptionDivs: null,
+
+        addStaticMaps: function () {
+            var imgContainers = document.getElementById('mapContainer').getElementsByClassName('imgContainer');
+            for (var i = 0; i < imgContainers.length; i++) {
+                var imgContainer = imgContainers[i];
+
+                var imgSrc = 'https://maps.googleapis.com/maps/api/staticmap?size=350x175&' +
+                    'scale=' + (window.devicePixelRatio >= 2 ? 2 : 1) + '&' +
+                    'visible=' + imgContainer.dataset.boundSouthLat + ',' + imgContainer.dataset.boundWestLng + '|' +
+                    imgContainer.dataset.boundNorthLat + ',' + imgContainer.dataset.boundEastLng +
+                    '&key=' + GOOGLE_MAPS_JS_API_KEY;
+
+                imgContainer.style.backgroundImage = 'url("' + imgSrc + '")';
+            }
+        },
+
+        initializeDescriptionDivs: function () {
+            Maps.descriptionDivs = document.getElementById('mapContainer').getElementsByClassName('description');
+
+            for (var i = 0; i < Maps.descriptionDivs.length; i++) {
+                var description = Maps.descriptionDivs[i];
+                var boundingClientRect = description.getBoundingClientRect();
+
+                description.defaultHeight = boundingClientRect.height;
+            }
+        },
+
+        calculateDescriptionDivHeights: function () {
+            var currentY;
+            var rows = [];
+            for (var i = 0; i < Maps.descriptionDivs.length; i++) {
+                var description = Maps.descriptionDivs[i];
+                var boundingClientRect = description.getBoundingClientRect();
+
+                if (currentY !== boundingClientRect.y) {
+                    rows.push([]);
+                }
+
+                rows[rows.length - 1].push(description);
+
+                currentY = boundingClientRect.y;
+            }
+
+            for (var i = 0; i < rows.length; i++) {
+                var row = rows[i];
+
+                var maxHeight = 0;
+                for (var j = 0; j < row.length; j++) {
+                    var description = row[j];
+
+                    if (description.defaultHeight > maxHeight) {
+                        maxHeight = description.defaultHeight;
+                    }
+                }
+
+                for (var j = 0; j < row.length; j++) {
+                    var description = row[j];
+
+                    description.style.height = maxHeight + 'px';
+                }
+            }
+        }
+    };
+
+    Maps.addStaticMaps();
+
+    Maps.initializeDescriptionDivs();
+    Maps.calculateDescriptionDivHeights();
+
+    window.onresize = function () {
+        Maps.calculateDescriptionDivHeights();
+    };
+})();