diff --git a/media/js/zamboni/browser.js b/media/js/zamboni/browser.js
index 211c9b35b95..43764646af5 100644
--- a/media/js/zamboni/browser.js
+++ b/media/js/zamboni/browser.js
@@ -12,9 +12,11 @@ function BrowserUtils() {
             'thunderbird': /Mozilla.*(Thunderbird|Shredder|Lanikai)\/([^\s*]*).*$/
         },
         osStrings = {
-            'windows': 'Win32',
+            'windows': 'Windows',
             'mac': 'Mac',
-            'linux': 'Linux'
+            'linux': 'Linux',
+            'android': 'Android',
+            'maemo': 'Maemo'
         };
 
     // browser detection
@@ -37,19 +39,23 @@ function BrowserUtils() {
     for (i in osStrings) {
         if (osStrings.hasOwnProperty(i)) {
             pattern = osStrings[i];
-            os[i] = navigator.platform.indexOf(pattern) != -1;
+            os[i] = navigator.userAgent.indexOf(pattern) != -1;
             if (os[i]) {
                 platform = i;
             }
         }
     }
-    os['other'] = !platform;
+    if (!platform) {
+        os['other'] = !platform;
+        platform = "other";
+    }
 
     return {
         "browser": browser,
         "browserVersion": browserVersion,
         "os": os,
-        "platform": platform
+        "platform": platform,
+        "platformName": gettext(osStrings[platform])
     };
 }
 
@@ -103,9 +109,9 @@ var VersionCompare = {
         var pattern = /^([-\d]*)([^-\d]*)([-\d]*)(.*)$/,
             m = pattern.exec(p),
             r = {
-            'numA'  : parseInt(m[1]),
+            'numA'  : parseInt(m[1], 10),
             'strB'   : m[2],
-            'numC'   : parseInt(m[3]),
+            'numC'   : parseInt(m[3], 10),
             'extraD' : m[4]
             };
         if (r['strB'] == '+') {
diff --git a/media/js/zamboni/mobile_buttons.js b/media/js/zamboni/mobile_buttons.js
index 79a1cbd97ed..59905cab632 100644
--- a/media/js/zamboni/mobile_buttons.js
+++ b/media/js/zamboni/mobile_buttons.js
@@ -45,7 +45,7 @@
         'tooOld': format(gettext("Requires Newer Version of {0}"), z.appName),
         'unreviewed': gettext("Unreviewed"),
         'badApp': format(gettext("Not Available for {0}"), z.appName),
-        'badPlatform': format(gettext("Not Available for {0}"), z.platform),
+        'badPlatform': format(gettext("Not Available for {0}"), z.platformName),
         'experimental': gettext("Experimental")
     };
 
@@ -85,7 +85,7 @@
             versionPlatformCheck();
 
             this.actionQueue.push([0, function() {
-                var href = activeInstaller.attr('href');
+                var href = activeInstaller.attr('href'),
                     hash = hashes[href],
                     attr = self.attr,
                     install = attr.search ? z.installSearch : z.installAddon;
@@ -101,7 +101,7 @@
             }
 
             // sort the actionQueue by priority
-            this.actionQueue.sort(function (a, b) {return b[0]-a[0]});
+            this.actionQueue.sort(function (a, b) {return b[0]-a[0];});
         };
 
         function collectHashes() {
@@ -126,7 +126,7 @@
             // execute the next action if the current action returns true.
             if (result === true) {
                 self.resumeInstall();
-            };
+            }
         }
         this.resumeInstall = function() {
             // moving on.
@@ -166,8 +166,8 @@
             var b = dom.self,
                 attr = self.attr,
                 classes = self.classes,
-                platformer = b.find('.platform').length,
-                platformSupported = (platformer && dom.buttons.filter("." + z.platform).length),
+                platformer = !!b.find('.platform').length,
+                platformSupported = !platformer || dom.buttons.filter("." + z.platform).length,
                 appSupported = z.appMatchesUserAgent && attr.min && attr.max,
                 olderBrowser, newerBrowser,
                 canInstall = true;
@@ -185,7 +185,7 @@
             } else {
                 if (!appSupported) errors.push("badApp");
                 if (!platformSupported) {
-                    errors.push("badApp");
+                    errors.push("badPlatform");
                     dom.buttons.hide().eq(0).show();
                 }
                 canInstall = false;
@@ -215,7 +215,7 @@
             } else {
                 dom.buttons.click(startInstall);
             }
-        };
+        }
 
         //and of course, initialize the button.
         this.init();
@@ -223,7 +223,7 @@
     
     z.b = function() {
         new Button(this);
-    }
+    };
     
     jQuery.fn.installButton = function() {
         return this.each(z.b);