1 files changed, 9 insertions, 11 deletions

diff --git a/js/binaryXHR.js b/js/binaryXHR.js
index ef8478c..8ce4b0f 100644
--- a/js/binaryXHR.js
+++ b/js/binaryXHR.js
@@ -30,11 +30,9 @@ InvalidBinaryFile.prototype.toString = function() {
 // =====================================================================
 // BinaryFile class
 //   Allows access to element inside a binary stream
-function BinaryFile(strData, iDataOffset, iDataLength) {
+function BinaryFile(data) {
         "use strict";
-        var data = strData;
-        var dataOffset = iDataOffset || 0;
-        var dataLength = 0;
+        var dataLength;
         // added 
         var doubleMantExpHi=Math.pow(2,-28);
         var doubleMantExpLo=Math.pow(2,-52);
@@ -46,21 +44,21 @@ function BinaryFile(strData, iDataOffset, iDataLength) {
                 return data;
         };
 
-        if (typeof strData === "string") {
-                dataLength = iDataLength || data.length;
+        if (typeof data === "string") {
+                dataLength = data.length;
 
                 this.getByteAt = function(iOffset) {
-                        return data.charCodeAt(iOffset + dataOffset) & 0xFF;
+                        return data.charCodeAt(iOffset) & 0xFF;
                 };
-        } else if (typeof strData === "unknown") {
+        } else if (typeof data === "unknown") {
                 // Correct. "unknown" as type. MS JScript 8 added this.
-                dataLength = iDataLength || IEBinary_getLength(data);
+                dataLength = IEBinary_getLength(data);
 
                 this.getByteAt = function(iOffset) {
-                        return IEBinary_getByteAt(data, iOffset + dataOffset);
+                        return IEBinary_getByteAt(data, iOffset);
                 };
         } else {
-                throw new InvalidBinaryFile("Unsupported type " + (typeof strData));
+                throw new InvalidBinaryFile("Unsupported type " + (typeof data));
         }
 
         if (switch_endian) {