function submitLogon() {
    var isValid = true
    if ($("#signin_inactive")[0].offsetHeight == 0) {
        if ($.trim($("#ctlHeader_txtPassword").val()) == "") {
            isValid = false
            $("#PS_wrng").show()
            $("#ctlHeader_txtPassword").unbind('keyup')
            $('#ctlHeader_txtPassword').keyup(function() { $("#PS_wrng").hide() })
        }
        if ($.trim($("#ctlHeader_txtUserName").val()) == "") {
            isValid = false
            $("#UN_wrng").show()
            $("#ctlHeader_txtUserName").unbind('keyup')
            $('#ctlHeader_txtUserName').keyup(function() { $("#UN_wrng").hide() })
        }
        if (isValid) {
            document.forms[0].submit()
        }
    }
}