If (Not IsCallback) Then
    pnlLoading.Visible = True
    pnlQuote1.Visible = False
Else
    pnlLoading.Visible = False
    pnlQuote1.Visible = True
    <Load data from DB and web service>
    <Build page>
    If (<Some Criteria>) Then
        somelink.Disable = True
    End If
End If

if (document.getElementById('pnlQuote1') === null) {
    ob_post.post(null, 'PerformRating', ratingResult);
}