I am trying to create a dialog using jQuery UI dialog.   The dialog appears and works fine when the page launches (I left autoopen=true for this test).

$(function Test() {
        $("#mydialog").dialog({
            modal: true,
            buttons: {
                Ok: function () {
                    $(this).dialog("close");
                }
            }
        });
    });

However when I try to open the dialog in code behind, instead of a popup, I get the text appears embedded in the page, "flat", without borders, buttons, etc.  It looks like it is losing the style at postback?  This is the code I am using in the code behind

Page.ClientScript.RegisterStartupScript(Me.GetType(), "Call my function", "Test();", True)

I also tried to use the runjQueryCode posted around on the web -  runjQueryCode("Test();")

What am I doing wrong?

Thanks in advance!