diff --git a/example.html b/example.html
index 0e4e9b7..1b7436e 100644
--- a/example.html
+++ b/example.html
@@ -20,8 +20,10 @@ for (var i=0; i<10; i++) {
         document.write("count: "+i); 
         document.write(" hex40 (used in ootp): ");
         document.write(hotp("3132333435363738393031323334353637383930",i,"hex40"));
-        document.write(" HOTP value: ");
+        document.write(" HOTP value: (dec6)");
         document.write(hotp("3132333435363738393031323334353637383930",i,"dec6"));
+        document.write(" HOTP value: (dec8)");
+        document.write(hotp("3132333435363738393031323334353637383930",i,"dec8")); 
         document.write("<br />");
 }
 </script>
diff --git a/hotp/hotp.js b/hotp/hotp.js
index 0137209..694e83e 100644
--- a/hotp/hotp.js
+++ b/hotp/hotp.js
@@ -92,6 +92,10 @@ function hotp(key, counter, format) {
         return hmacBytes.substring(0, 10);
     } else if (format == "dec6") {
         return truncatedvalue(Crypto.util.hexToBytes(hmacBytes), 6);
+    } else if (format == "dec7") {
+        return truncatedvalue(Crypto.util.hexToBytes(hmacBytes), 7);
+    } else if (format == "dec8") {
+        return truncatedvalue(Crypto.util.hexToBytes(hmacBytes), 8);
     }
     else {
         return "unknown format";