diff --git a/src/webui/www/private/preferences_content.html b/src/webui/www/private/preferences_content.html
index 5973c84cf..0a56c1411 100644
--- a/src/webui/www/private/preferences_content.html
+++ b/src/webui/www/private/preferences_content.html
@@ -109,28 +109,28 @@
   <table>
   <tr>
   <td>
-    <input type="checkbox" id="max_connec_checkbox" onClick="updateMaxConnecEnabled();"/>
+    <input type="checkbox" id="max_connec_checkbox" onclick="updateMaxConnecEnabled();"/>
     <label for="max_connec_checkbox">QBT_TR(Global maximum number of connections:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="max_connec_value" style="width: 4em;"/></td>
   </tr>
   <tr>
   <td>
-    <input type="checkbox" id="max_connec_per_torrent_checkbox" onClick="updateMaxConnecPerTorrentEnabled();"/>
+    <input type="checkbox" id="max_connec_per_torrent_checkbox" onclick="updateMaxConnecPerTorrentEnabled();"/>
     <label for="max_connec_per_torrent_checkbox">QBT_TR(Maximum number of connections per torrent:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="max_connec_per_torrent_value" style="width: 4em;"/></td>
   </tr>
   <tr>
   <td>
-    <input type="checkbox" id="max_uploads_checkbox" onClick="updateMaxUploadsEnabled();"/>
+    <input type="checkbox" id="max_uploads_checkbox" onclick="updateMaxUploadsEnabled();"/>
     <label for="max_uploads_checkbox">QBT_TR(Global maximum number of upload slots:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="max_uploads_value" style="width: 4em;"/></td>
   </tr>
   <tr>
   <td>
-    <input type="checkbox" id="max_uploads_per_torrent_checkbox" onClick="updateMaxUploadsPerTorrentEnabled();"/>
+    <input type="checkbox" id="max_uploads_per_torrent_checkbox" onclick="updateMaxUploadsPerTorrentEnabled();"/>
     <label for="max_uploads_per_torrent_checkbox">QBT_TR(Maximum number of upload slots per torrent:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="max_uploads_per_torrent_value" style="width: 4em;"/></td>
@@ -205,14 +205,14 @@
   <table>
   <tr>
   <td>
-    <input type="checkbox" id="up_limit_checkbox" onClick="updateUpLimitEnabled();"/>
+    <input type="checkbox" id="up_limit_checkbox" onclick="updateUpLimitEnabled();"/>
     <label for ="up_limit_checkbox">QBT_TR(Upload:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="up_limit_value" style="width: 4em;"/>&nbsp;&nbsp;QBT_TR(KiB/s)QBT_TR[CONTEXT=OptionsDialog]</td>
   </tr>
   <tr>
   <td>
-    <input type="checkbox" id="dl_limit_checkbox" onClick="updateDlLimitEnabled();"/>
+    <input type="checkbox" id="dl_limit_checkbox" onclick="updateDlLimitEnabled();"/>
     <label for="dl_limit_checkbox">QBT_TR(Download:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="dl_limit_value" style="width: 4em;"/>&nbsp;&nbsp;QBT_TR(KiB/s)QBT_TR[CONTEXT=OptionsDialog]</td>
@@ -225,14 +225,14 @@
   <table>
   <tr>
   <td>
-    <input type="checkbox" id="alt_up_limit_checkbox" onClick="updateAltUpLimitEnabled();"/>
+    <input type="checkbox" id="alt_up_limit_checkbox" onclick="updateAltUpLimitEnabled();"/>
     <label for ="alt_up_limit_checkbox">QBT_TR(Upload:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="alt_up_limit_value" style="width: 4em;"/>&nbsp;&nbsp;QBT_TR(KiB/s)QBT_TR[CONTEXT=OptionsDialog]</td>
   </tr>
   <tr>
   <td>
-    <input type="checkbox" id="alt_dl_limit_checkbox" onClick="updateAltDlLimitEnabled();"/>
+    <input type="checkbox" id="alt_dl_limit_checkbox" onclick="updateAltDlLimitEnabled();"/>
     <label for="alt_dl_limit_checkbox">QBT_TR(Download:)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td><input type="text" id="alt_dl_limit_value" style="width: 4em;"/>&nbsp;&nbsp;QBT_TR(KiB/s)QBT_TR[CONTEXT=OptionsDialog]</td>
@@ -240,7 +240,7 @@
   </table>
 
   <fieldset class="settings">
-  <legend><input type="checkbox" id="limit_sheduling_checkbox" onClick="updateSchedulingEnabled();"/>
+  <legend><input type="checkbox" id="limit_sheduling_checkbox" onclick="updateSchedulingEnabled();"/>
   <label for="limit_sheduling_checkbox">QBT_TR(Schedule the use of alternative rate limits)QBT_TR[CONTEXT=OptionsDialog]</label></legend>
   QBT_TR(From:)QBT_TR[CONTEXT=OptionsDialog]
   <input type="text" id="schedule_from_hour" style="width: 1.5em;"/>:<input type="text" id="schedule_from_min" style="width: 1.5em;"/>
@@ -318,7 +318,7 @@
   <table>
   <tr>
   <td>
-  <input type="checkbox" id="max_ratio_checkbox" onClick="updateMaxRatioTimeEnabled();"/>
+  <input type="checkbox" id="max_ratio_checkbox" onclick="updateMaxRatioTimeEnabled();"/>
   <label for="max_ratio_checkbox">QBT_TR(Seed torrents until their ratio reaches)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td>
@@ -326,7 +326,7 @@
   </td>
   <tr>
   <td>
-  <input type="checkbox" id="max_seeding_time_checkbox" onClick="updateMaxRatioTimeEnabled();"/>
+  <input type="checkbox" id="max_seeding_time_checkbox" onclick="updateMaxRatioTimeEnabled();"/>
   <label for="max_seeding_time_checkbox">QBT_TR(Seed torrents until their seeding time reaches)QBT_TR[CONTEXT=OptionsDialog]</label>
   </td>
   <td>