Hi; I've used the jQuery's official validation plugin (http:// bassistance.de/jquery-plugins/jquery-plugin-validation/), your can see the page in here (http://nexus.di-tasarim.com/index.php? option=com_nexus&act=courses&task=viewApp&id=1)
The main difference between the orginal code and mine is,I used a table based layout for form only, it is not cause any error in FireFox but in Internet Explorer is fails. And also I put the same tableless code from orginal examples, it also fails in Internet Explorer. What's problem, please help... tHanks...