diff --git a/Src/Newtonsoft.Json.Tests/JavaScriptConvertTest.cs b/Src/Newtonsoft.Json.Tests/JavaScriptConvertTest.cs
new file mode 100644
index 000000000..63bf85b10
--- /dev/null
+++ b/Src/Newtonsoft.Json.Tests/JavaScriptConvertTest.cs
@@ -0,0 +1,71 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Newtonsoft.Json.Utilities;
+using NUnit.Framework;
+
+namespace Newtonsoft.Json.Tests
+{
+  [TestFixture]
+  public class JavaScriptConvertTest
+  {
+    [Test]
+    public void EscapeJavaScriptString()
+    {
+      string result;
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString("How now brown cow?", '"', true);
+      Assert.AreEqual(@"""How now brown cow?""", result);
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString("How now 'brown' cow?", '"', true);
+      Assert.AreEqual(@"""How now 'brown' cow?""", result);
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString("How now <brown> cow?", '"', true);
+      Assert.AreEqual(@"""How now <brown> cow?""", result);
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString(@"How 
+now brown cow?", '"', true);
+      Assert.AreEqual(@"""How \r\nnow brown cow?""", result);
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString("\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007", '"', true);
+      Assert.AreEqual(@"""\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007""", result);
+
+      result =
+        JavaScriptUtils.ToEscapedJavaScriptString("\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013", '"', true);
+      Assert.AreEqual(@"""\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013""", result);
+
+      result =
+        JavaScriptUtils.ToEscapedJavaScriptString(
+          "\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f ", '"', true);
+      Assert.AreEqual(@"""\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f """, result);
+
+      result =
+        JavaScriptUtils.ToEscapedJavaScriptString(
+          "!\"#$%&\u0027()*+,-./0123456789:;\u003c=\u003e?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]", '"', true);
+      Assert.AreEqual(@"""!\""#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]""", result);
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString("^_`abcdefghijklmnopqrstuvwxyz{|}~", '"', true);
+      Assert.AreEqual(@"""^_`abcdefghijklmnopqrstuvwxyz{|}~""", result);
+
+      string data =
+        "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$%&\u0027()*+,-./0123456789:;\u003c=\u003e?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
+      string expected =
+        @"""\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\""#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~""";
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString(data, '"', true);
+      Assert.AreEqual(expected, result);
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString("Fred's cat.", '\'', true);
+      Assert.AreEqual(result, @"'Fred\'s cat.'");
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString(@"""How are you gentlemen?"" said Cats.", '"', true);
+      Assert.AreEqual(result, @"""\""How are you gentlemen?\"" said Cats.""");
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString(@"""How are' you gentlemen?"" said Cats.", '"', true);
+      Assert.AreEqual(result, @"""\""How are' you gentlemen?\"" said Cats.""");
+
+      result = JavaScriptUtils.ToEscapedJavaScriptString(@"Fred's ""cat"".", '\'', true);
+      Assert.AreEqual(result, @"'Fred\'s ""cat"".'");
+    }
+  }
+}
\ No newline at end of file
diff --git a/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs b/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs
index fbbd1ce82..264755644 100644
--- a/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs
+++ b/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs
@@ -498,6 +498,26 @@ public void ReadOnlyCollectionSerialize()
       CollectionAssert.AreEqual(r1, r2);
     }
 
+    public class Person
+    {
+      private Guid _internalId;
+      private string _firstName;
+
+      [JsonIgnore]
+      public Guid InternalId
+      {
+        get { return _internalId; }
+        set { _internalId = value; }
+      }
+
+      [JsonProperty("first_name")]
+      public string FirstName
+      {
+        get { return _firstName; }
+        set { _firstName = value; }
+      }
+    }
+
     //public abstract class Foo
     //{
     //}
diff --git a/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.csproj b/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.csproj
index a1bb2c487..e0da73c44 100644
--- a/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.csproj
+++ b/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.csproj
@@ -46,6 +46,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AspNetAjaxDateTimeConverterTest.cs" />
+    <Compile Include="JavaScriptConvertTest.cs" />
     <Compile Include="JsonReaderTest.cs" />
     <Compile Include="JsonSerializerTest.cs" />
     <Compile Include="JsonWriterTest.cs" />
diff --git a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
index e17ba8fac..daff630ce 100644
--- a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
+++ b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
@@ -34,6 +34,7 @@
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
+[assembly: InternalsVisibleTo("Newtonsoft.Json.Tests")]
 [assembly: AllowPartiallyTrustedCallers]
 
 // Setting ComVisible to false makes the types in this assembly not visible 
diff --git a/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs b/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs
index 7bedfbb95..fde0bb92d 100644
--- a/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs
+++ b/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs
@@ -84,9 +84,13 @@ public static void WriteEscapedJavaScriptChar(TextWriter writer, char c, char de
         //case '\'':
         //  StringUtils.WriteCharAsUnicode(writer, c);
         //  break;
+        case '\'':
+          // only escape if this charater is being used as the delimiter
+          writer.Write((delimiter == '\'') ? @"\'" : @"'");
+          break;
         case '"':
           // only escape if this charater is being used as the delimiter
-          writer.Write((delimiter == '"') ? "\\\"" : null);
+          writer.Write((delimiter == '"') ? "\\\"" : @"""");
           break;
         default:
           if (c > '\u001f')
@@ -130,8 +134,4 @@ public static string ToEscapedJavaScriptString(string value, char delimiter, boo
       }
     }
   }
-}
-
-
-
-
+}
\ No newline at end of file