How to stream Chart Images as FileResult from MVC Controllers update via jQuery Ajax

Question

I am experimenting with Nic's method of streaming images as FileResult from controllers. CodeProject article.

I thought I take it a step further and have an image get updated via jQuery.
I have tried all sorts of ways but can't get the image to show. In this current state I am seeing all the characters of the PNG, I think it is sending the binary data.
Anyone have any ideas on how to do this?

Partial View

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %>
<img src="/Home/GetHistoryChart" alt="My Chart" id="imgHistoryChart" />

Page

<input id="begindate" type="text" readonly="readonly" style="width:70px;" />
<input id="enddate" type="text" readonly="readonly" style="width:70px;"  />
<input type="submit" value="Refresh" id="refreshHistory" />
<div type="text" id="datepicker"></div>
<div id="theImageHistory">
<% Html.RenderPartial("~/Views/Home/Charts/HistoryImg.ascx"); %></div>
<%--Gets the partial view shown above--%>
</div>

<script type="text/javascript">
$(document).ready(function() {
 $("#refreshHistory").click(function() {
        var fromDate = $("#begindate").val();
        var toDate = $("#enddate").val();
        RefreshImage(fromDate, toDate);
    });
});
function RefreshImage(from, to) {
 $('div#theImageHistory').load('/Home/GetHistoryChart', { fromDate: '8/1/2009', toDate : '8/24/2009' },
    function(html) {
        //$('div#theImageHistory')[0].value = html;
        alert('Do I get here');

    });
}
</script>

Controller

public FileResult GetHistoryChart(string? fromDate, string? toDate)
{
 //  code...
 System.IO.MemoryStream imageStream = new System.IO.MemoryStream();
        Chart1.SaveImage(imageStream, ChartImageFormat.Png);
        return new FileResult("Yo.png", "image/png", imageStream.ToArray());
}