Position Absolute is sharing an easy to use form validation engine built with jQuery.
It offers a flexible way of displaying errors that will possibly match any type of form design. When the script detects an error, it creates a div, positions it at the right-top corner of the input & displays it like a tooltip with the error message inside.

Validation rules are created inside the classes of every input field like:
<input class="validate[required,custom[onlyLetter],length[0,100]]"name="first" type="text" />
Also, you can define custom rules via RegEx & error messages can be localised with custom language files.
VIEW DEMO
DOWNLOAD CODE