dashboard/app: fix table sorting on firefox

Under Firefox 60 browser, sort operation does not work and

  ReferenceError: event is not defined

error message is printed in the Web Console window.
Let's explicitly pass an object reference to the sortTable function.

Credit goes to Tetsuo Handa.

3 files changed, 23 insertions, 23 deletions

diff --git a/dashboard/app/bug.html b/dashboard/app/bug.html
index 580454e23..c421b9db3 100644
--- a/dashboard/app/bug.html
+++ b/dashboard/app/bug.html
@@ -37,17 +37,17 @@ Page with details about a single bug.
 	<table class="list_table">
 		<caption>All crashes ({{.Bug.NumCrashes}}):</caption>
 		<tr>
-			<th><a onclick="return sortTable('Manager', textSort)" href="#">Manager</a></th>
-			<th><a onclick="return sortTable('Time', dateSort)" href="#">Time</a></th>
-			<th><a onclick="return sortTable('Kernel', textSort)" href="#">Kernel</a></th>
-			<th><a onclick="return sortTable('Commit', textSort)" href="#">Commit</a></th>
-			<th><a onclick="return sortTable('Syzkaller', textSort)" href="#">Syzkaller</a></th>
-			<th><a onclick="return sortTable('Config', textSort)" href="#">Config</a></th>
-			<th><a onclick="return sortTable('Log', textSort)" href="#">Log</a></th>
-			<th><a onclick="return sortTable('Report', reproSort)" href="#">Report</a></th>
-			<th><a onclick="return sortTable('Syz repro', reproSort)" href="#">Syz repro</a></th>
-			<th><a onclick="return sortTable('C repro', textSort)" href="#">C repro</a></th>
-			<th><a onclick="return sortTable('Maintainers', textSort)" href="#">Maintainers</a></th>
+			<th><a onclick="return sortTable(this, 'Manager', textSort)" href="#">Manager</a></th>
+			<th><a onclick="return sortTable(this, 'Time', dateSort)" href="#">Time</a></th>
+			<th><a onclick="return sortTable(this, 'Kernel', textSort)" href="#">Kernel</a></th>
+			<th><a onclick="return sortTable(this, 'Commit', textSort)" href="#">Commit</a></th>
+			<th><a onclick="return sortTable(this, 'Syzkaller', textSort)" href="#">Syzkaller</a></th>
+			<th><a onclick="return sortTable(this, 'Config', textSort)" href="#">Config</a></th>
+			<th><a onclick="return sortTable(this, 'Log', textSort)" href="#">Log</a></th>
+			<th><a onclick="return sortTable(this, 'Report', reproSort)" href="#">Report</a></th>
+			<th><a onclick="return sortTable(this, 'Syz repro', reproSort)" href="#">Syz repro</a></th>
+			<th><a onclick="return sortTable(this, 'C repro', textSort)" href="#">C repro</a></th>
+			<th><a onclick="return sortTable(this, 'Maintainers', textSort)" href="#">Maintainers</a></th>
 		</tr>
 		{{range $c := $.Crashes}}
 			<tr>
diff --git a/dashboard/app/static/common.js b/dashboard/app/static/common.js
index c2e021d81..5b4f8737c 100644
--- a/dashboard/app/static/common.js
+++ b/dashboard/app/static/common.js
@@ -1,8 +1,8 @@
 // Copyright 2018 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
-function sortTable(colName, conv) {
-	table = event.srcElement.parentNode.parentNode.parentNode;
+function sortTable(item, colName, conv) {
+	table = item.parentNode.parentNode.parentNode;
 	rows = table.getElementsByTagName("tr");
 	col = findColumnByName(rows[0].getElementsByTagName("th"), colName);
 	values = new Array;
diff --git a/dashboard/app/templates.html b/dashboard/app/templates.html
index 7ad794cf3..772135fa7 100644
--- a/dashboard/app/templates.html
+++ b/dashboard/app/templates.html
@@ -48,22 +48,22 @@ Use of this source code is governed by Apache 2 LICENSE that can be found in the
 	<caption id="{{.Fragment}}">{{$.Caption}}:</caption>
 	<tr>
 		{{if $.ShowNamespace}}
-			<th><a onclick="return sortTable('Kernel', textSort)" href="#">Kernel</a></th>
+			<th><a onclick="return sortTable(this, 'Kernel', textSort)" href="#">Kernel</a></th>
 		{{end}}
-		<th><a onclick="return sortTable('Title', textSort)" href="#">Title</a></th>
-		<th><a onclick="return sortTable('Repro', reproSort)" href="#">Repro</a></th>
-		<th><a onclick="return sortTable('Count', numSort)" href="#">Count</a></th>
-		<th><a onclick="return sortTable('Last', timeSort)" href="#">Last</a></th>
-		<th><a onclick="return sortTable('Reported', timeSort)" href="#">Reported</a></th>
+		<th><a onclick="return sortTable(this, 'Title', textSort)" href="#">Title</a></th>
+		<th><a onclick="return sortTable(this, 'Repro', reproSort)" href="#">Repro</a></th>
+		<th><a onclick="return sortTable(this, 'Count', numSort)" href="#">Count</a></th>
+		<th><a onclick="return sortTable(this, 'Last', timeSort)" href="#">Last</a></th>
+		<th><a onclick="return sortTable(this, 'Reported', timeSort)" href="#">Reported</a></th>
 		{{if $.ShowPatch}}
-			<th><a onclick="return sortTable('Closed', timeSort)" href="#">Closed</a></th>
-			<th><a onclick="return sortTable('Patch', textSort)" href="#">Patch</a></th>
+			<th><a onclick="return sortTable(this, 'Closed', timeSort)" href="#">Closed</a></th>
+			<th><a onclick="return sortTable(this, 'Patch', textSort)" href="#">Patch</a></th>
 		{{end}}
 		{{if $.ShowPatched}}
-			<th><a onclick="return sortTable('Patched', patchedSort)" href="#">Patched</a></th>
+			<th><a onclick="return sortTable(this, 'Patched', patchedSort)" href="#">Patched</a></th>
 		{{end}}
 		{{if $.ShowStatus}}
-			<th><a onclick="return sortTable('Status', textSort)" href="#">Status</a></th>
+			<th><a onclick="return sortTable(this, 'Status', textSort)" href="#">Status</a></th>
 		{{end}}
 	</tr>
 	{{range $b := .Bugs}}