getUnity function not returning unity object in Web Player

I am trying to call a simple C# method from the web code using SendMessage in JavaScript. No matter what I try, I cannot get it to work. I have followed this tutorial to the letter > http://docs.unity3d.com/Manual/UnityWebPlayerandbrowsercommunication.html

Here's my code from the HTML of my Web Build:

     u.initPlugin(jQuery("#unityPlayer")[0], "WebBuild.unity3d");
     var loadUnity = u.getUnity();
     console.log(loadUnity);
     loadUnity.SendMessage("Submit", "Test", "");

No matter what I try, SendMessage is always undefined. I can't communicate with Unity.

In Firefox, the console.log returns an HTML element:

<embed width="900" height="600" src="WebBuild.unity3d" type="application/vnd.unity" firstframecallback="UnityObject2.instances[0].firstFrameCallback();" enabledebugging="0" style="display: block; width: 900px; height: 600px;">

In IE 11, the console.log returns this slightly different HTML element:

<object classid="clsid:444785F1-DE89-4295-863A-D46C3A781394" style="width: 900px; height: 600px; display: block;"><param name="src" value="WebBuild.unity3d" abp="6"></param><param name="firstFrameCallback" value="UnityObject2.instances[0].firstFrameCallback();" abp="7"></param><param name="enableDebugging" value="0" abp="8"></param></object>

What is up with this? Shouldn't this be returning a JavaScript object that includes the method SendMessage()? Why is getUnity() returning an HTML element? I cannot use an HTML element. This is extremely frustrating. I've spent upwards of 4 days googling and trying to figure this out.

Help is greatly appreciated.