Jquery attr('src') undefined in IE 8 (works in FF)

Question

This has gotten so far,that I will sum up what we found out:

• Inside the event handler the attribute src cannot be read in IE8 (FF works fine), neither with

Answer 1

$(document).ready(function () {
    $("#imgReload").click(function () {
        $('#<%=imgCaptcha.ClientID %>').removeAttr("src");
        $('#<%=imgCaptcha.ClientID %>').attr("src", "Captcha.ashx");
    });
});