I just found the plugin named "Validation". After some lookups in the source of a form of the maker as example I thought that it would be easy to implement it. Unfortunately it doesn't, also I can't find any good docs about how I need to make a form with that validation.

This is for so far I have my HTML and such

2. ${}.ready(function() {
3. $("#registerForm").validate({
4. rules: {
5. gebruikersnaam: {
6. required: true,
7. minlength: 3,
8. maxlength: 25
9. },
10. voornaam: {
11. required: true,
12. minlength: 3,
13. maxlength: 25
14. },
15.                         },
16.                         messages: {
17. gebruikersnaam: {
18. required: "Je gebruikersnaam is niet ingevuld",
19. minlength: "Je gebruikersnaam is te kort (minimaal 3)"
20. },
21. voornaam: "Je voornaam is niet ingevuld"
22.                         }
23.                   });
24.             });
25.             </script>
26.             
27. <form id="registerForm" method="POST" action="bla.html">
28. <table cellpadding=0 cellspacing=0 border=0 style="table-layout:fixed" width="341">
30. <tr>
31. <td width="150">Gebruikersnaam:</td>
32. <td width="300" align="center"><input type="text" name="gebruikersnaam" size="25" maxlength="12"></td>
33. </tr>
34. <tr>
35. <td width="150">Voornaam:</td>
36. <td width="300" align="center"><input type="text" name="voornaam" size="25" maxlength="12"></td>
37. </tr>

Mind the form close (that is good and such), but what am I doing wrong...? Because I somewhat just match the example of the author (for so far it is explained (which isn't imo))!?!?