X-Git-Url: http://git.shiar.net/sheet.git/blobdiff_plain/e55faac19fb69db78fe5057f1ff68b6a84efac8b..385813929989c8745b914a7fb4b48384f388c6cb:/keys.js

diff --git a/keys.js b/keys.js
index eca77e5..cebd0ee 100644
--- a/keys.js
+++ b/keys.js
@@ -1,16 +1,18 @@
 var basetitle = document.title;
 
 function setmode(classname, restore) {
+	var tableref = document.getElementById('rows');
+	if (!tableref) return;
 	// set style for each #rows>li>ul>li to display:none unless it matches classname
 	var showclass = classname ? '^mode '+classname+'(?!\\w)' : '^(?!mode)';
-	var rows = document.getElementById('rows').getElementsByTagName('TR');
+	var rows = tableref.getElementsByTagName('TR');
 	for (var i = 0; i < rows.length; i++) {
 		var el = rows[i];
 		el.style.display = el.className.match(showclass) ? 'block' : 'none';
 	}
 
 	// update H2 to reflect the first part of a currently active (but hidden) row header
-	var h3s = document.getElementsByTagName('TH');
+	var h3s = tableref.getElementsByTagName('TH');
 	for (var i = 0; i < h3s.length; i++) {
 		if (h3s[i].parentNode.style.display != 'block') continue;
 		var header = h3s[i].firstChild.data;