kupu-image-addbutton

Hi,

I almost have my image library finished. It was quite easy, thanks to 
kupu's extendability. There's one tiny problem to which there must be an 
easy answer.

A row of available images is displayed in the toolbox, each with an 
onClick() function - img src onClick=(). The function is one line of 
JavaScript that modifies kupu-image-input. User then clicks "Insert 
image", and the selected image is inserted. This is a working solution 
but I would like to improve it a bit:

How can I eliminate the need to click "Insert image"? User should be 
able to insert the image by simply clicking on it. I need an autosubmit.

In other words, I need to hook to the place that is called when user 
clicks "kupu-image-addbuton", but I have no idea where is this place. 
The idea is to create "kupu-image-addbuton_1", "kupu-image-addbuton_2" 
etc., and each of them calling the same function that 
"kupu-image-addbuton" calls.

Can you help, please?

--
Milos Prudek