I've got lightbox and imagehandler2 installed and I'm trying to make some changes that will allow me to have two different links under the main picture, each link would load a different size of popup.

So clicking the pic or 'larger image' would popup at say 500x500 and clicking 'supersize' would cause the popup to activate at say 1000x1000.

I had hoped that changing the values of large image height/width in tpl_modules_main_product_image:

document.write(\'<a href="' . zen_lightbox($products_image_large, addslashes($products_name), LARGE_IMAGE_WIDTH, LARGE_IMAGE_HEIGHT)

would have done the trick but no luck, does anyone have any suggestions.