i18n: Add autodetect support for staff timezone

README.md

@@ -115,6 +115,7 @@ osTicket is supported by several magical open source projects including:
   * [Font-Awesome](http://fortawesome.github.com/Font-Awesome/)
   * [HTMLawed](http://www.bioinformatics.org/phplabware/internal_utilities/htmLawed)
   * [jQuery dropdown](http://labs.abeautifulsite.net/jquery-dropdown/)
+  * [jsTimezoneDetect](http://pellepim.bitbucket.org/jstz/)
   * [mPDF](http://www.mpdf1.com/)
   * [PasswordHash](http://www.openwall.com/phpass/)
   * [PEAR](http://pear.php.net/package/PEAR)

include/staff/profile.inc.php

@@ -94,7 +94,20 @@ $info['id']=$staff->getId();
                     ?>><?php echo $zone; ?></option>
 <?php } ?>
                 </select>
-                &nbsp;<span class="error"><?php echo $errors['timezone']; ?></span>
+                <button class="action-button" onclick="javascript:
+    $('head').append($('<script>').attr('src', '<?php
+        echo ROOT_PATH; ?>/js/jstz.min.js'));
+    var recheck = setInterval(function() {
+        if (window.jstz !== undefined) {
+            clearInterval(recheck);
+            var zone = jstz.determine();
+            $('#timezone-dropdown').multiselect('widget')
+                .find('[value=\'' + zone.name() + '\']')
+                .trigger('click');
+        }
+    }, 200);
+    return false;"><i class="icon-map-marker"></i> <?php echo __('Auto Detect'); ?></button>
+                <div class="error"><?php echo $errors['timezone']; ?></div>
             </td>
         </tr>
         <tr>

include/staff/settings-system.inc.php

@@ -150,6 +150,19 @@ $gmtime = Misc::gmtime();
                     ?>><?php echo $zone; ?></option>
 <?php } ?>
                 </select>
+                <button class="action-button" onclick="javascript:
+    $('head').append($('<script>').attr('src', '<?php
+        echo ROOT_PATH; ?>/js/jstz.min.js'));
+    var recheck = setInterval(function() {
+        if (window.jstz !== undefined) {
+            clearInterval(recheck);
+            var zone = jstz.determine();
+            $('#timezone-dropdown').multiselect('widget')
+                .find('[value=\'' + zone.name() + '\']')
+                .trigger('click');
+        }
+    }, 200);
+    return false;"><i class="icon-map-marker"></i> <?php echo __('Auto Detect'); ?></button>
             </td>
         </tr>
         <tr><td width="220" class="required"><?php echo __('Date and Time Format');?>:</td>