diff --git a/index.html b/index.html
index c0dc454..b66807e 100644
--- a/index.html
+++ b/index.html
@@ -22,6 +22,8 @@
 </head>
 <body>
 <b>JS-XLSX (XLSX/XLSB/XLSM) Live Demo</b><br />
+<a href="https://github.com/SheetJS/js-xlsx">Github Repo</a><br />
+<a href="https://github.com/SheetJS/js-xlsx/issues">Issues?  Something look weird?  Click here and report an issue</a><br />
 Output Format:
 <select name="format">
 <option value="csv" selected> CSV</option>
@@ -59,12 +61,14 @@ if(!use_worker) {
 	document.getElementsByName("useworker")[0].checked = false;
 }
 
-var transferable = true;
+var transferable = use_worker;
 if(!transferable) {
 	document.getElementsByName("xferable")[0].disabled = true;
 	document.getElementsByName("xferable")[0].checked = false;
 }
 
+var wtf_mode = false;
+
 function fixdata(data) {
 	var o = "", l = 0, w = 10240;
 	for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint8Array(data.slice(l*w,l*w+w)));
@@ -170,7 +174,7 @@ function to_formulae(workbook) {
 var tarea = document.getElementById('b64data');
 function b64it() {
 	if(typeof console !== 'undefined') console.log("onload", new Date());
-	var wb = XLSX.read(tarea.value, {type: 'base64'});
+	var wb = XLSX.read(tarea.value, {type: 'base64',WTF:wtf_mode});
 	process_wb(wb);
 }
 
diff --git a/shim.js b/shim.js
index 0158595..1de5e15 100644
--- a/shim.js
+++ b/shim.js
@@ -200,7 +200,13 @@ if (!Array.prototype.indexOf) {
     return -1;
   };
 }
+// Based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
 
+if (! Array.isArray) {
+    Array.isArray = function(obj) {
+        return Object.prototype.toString.call(obj) === "[object Array]";
+    };
+}
 
 // https://github.com/ttaubert/node-arraybuffer-slice
 // (c) 2013 Tim Taubert <tim@timtaubert.de>
