Llightbox opens image source

In the lightbox plugin, when you click on the image with the mouse wheel, its source is opened in a new window. How can I make the image modal like when I click on the image?

Plugin Page

Tried to do so, did not help.

jQuery('#gallery a').on("mousedown", function(e) { if (e.which==2||e.which==3){ return false; } e.preventDefault(); });