Display ASP.Net RequiredField Validator Error Message jQuery Modal Dialog

Hi, I followed this thread http://www.aspsnippets.com/Articles/Display-ASPNet-ValidationSummary-control-inside-jQuery-Modal-Dialog-Popup.aspx and it solved a lot of things for me.. But what if I want to show one message after another like first name is required will be shown first and again on submit if email is even not filled there should be an message that says email is required.. Kindly help me with that..