iframe with pdf content crashes IE 8

[Jon]

I have a lightbox with an iframe in the item template that loads pdfs from an httphandler.  In chrome this works fine however it completely crashes IE 8 no matter how I attempt to load the pdf up (direct src, another .aspx with iframe content etc...).  An iframe loading the pdf content alone seems to work just fine however.

Here is my lightbox as declared:

Any suggestions?

<telerik:RadLightBox ID="helpFrame" runat="server" Width="1000px"
        Height="730px" Modal="True" ShowNextButton="False" ShowPrevButton="False"
        PreserveCurrentItemTemplates="true" RenderMode="Lightweight" ClientSettings-ClientEvents-OnLoad="helpLoad">
        <ClientSettings>
            <AnimationSettings HideAnimation="Resize" ShowAnimation="Resize" />
        </ClientSettings>
        <Items>
            <telerik:RadLightBoxItem>
                <ItemTemplate>
                    <iframe clientidmode="Static" id="helpIFrame" height="100%" width="100%"></iframe>
                </ItemTemplate>
            </telerik:RadLightBoxItem>
        </Items>
    </telerik:RadLightBox>

[Jon]

I resolved this by changing the iframe to an <object> which is probably the more elegant solution anyway.

Thanks.