test for typeof to avoid IE warnings

diff --git a/stylesheets/wikibits.js b/stylesheets/wikibits.js
index d3ed147..d297157 100644 (file)
--- a/stylesheets/wikibits.js
+++ b/stylesheets/wikibits.js
@@ -360,7 +360,7 @@ function insertTags(tagOpen, tagClose, sampleText) {
 }
 
 function akeytt() {
-    if(!ta) return;
+    if(typeof ta == "undefined" || !ta) return;
     pref = 'alt-';
     if(is_safari || navigator.userAgent.toLowerCase().indexOf( 'mac' ) + 1 ) pref = 'control-';
     if(is_opera) pref = 'shift-esc-';