jquery dynamic form error

I'm having trouble implementing this jQuery plugin for dynamic forms while following this tutorial

This simple code is giving me an error in Firefox 3.5.5.

$(document).ready(function(){  
    $('#duplicate').dynamic开发者_StackOverflow社区Form('#plus', '#minus', {limit:5});
});

and the error:

"$("#duplicate").dynamicForm is not a function"

There is an element in the HTML with id="duplicate" so I'm not sure what the error means.

Can anyone shed some insight on this issue?

Have you included jquery-dynamic-form.js in the head section of your page after the inclusion of the jquery library itself:

<script type="text/javascript" src="jquery.js"></script>    
<script type="text/javascript" src="jquery-dynamic-form.js"></script>

@buken how do you know that both are loading with no errors?

That error says that there is no function defined with that name for jQuery object. Probably that plug-in has not loaded properly when you try to use it.

Try checking $().dynamicForm in firebug console. If plugin is loaded it should output normalizeElmnt(elmnt). Check with example downloaded from http://code.google.com/p/jquery-dynamic-form/downloads/list, does it work or throws error?

After many hours of hair-pulling, I've finally fixed the issue. The culprit? Misspelling "text/javascript" in the script tag.

I think I'll take a nap now. Thanks everyone for your help.