Any way to know how this image cropper works?

Hi,

im trying to operate this image cropper. Here you have the [URL=“http://www.defusion.org.uk/demos/060519/cropper.php”]demo.

In the web page i’m constructing, when i place the cursor over the image a cross appear but when i click on the image nothing happens…

Is there any way (through Fierbug or any other tool) to know what happens (a function is called, or whatever) in the demo when i click on the image ?

Any other comment that could help me will be welcomed.

Bye

Javi