jQuery plugin

Hello,

I've been trying to use the imgAreaSelect 0.4.2 plugin (http://odyniec.net/projects/imgareaselect/)
with Drupal 5.8 but have had no luck.

Finally i removed the files from drupal framework and took it to a simple test area where i created a test file for using the
vanilla jQuery 1.2.6 and another file which uses Drupal's jquery.js file.

The test case works for vanilla 1.2.6 js file but breaks down for drupal's jquery.

I've attached the relevant 6 files

The error i get in when using Drupal's jquery is

I begin this discussion knowing full well this is a question only a themer could ask, but how do you get a jQuery plugin to function?