Links Plugin problem

I am using WP External Links Plugin allow with the JS code below to have all the external links on my site open in a popup browser window but for some reason the scroll toggle on my mouse won’t work in the popup window (only in these popup window). My site isn’t live so I haven’t been able to test if this only happens to me but I am not having problems with my scroll toggle anywhere else ever. Is there something in the code that would cause / fix this problem.

jQuery(function ($) {

$(‘a[rel*=”external”]’).click(function (e) {
// open link in popup window
window.open($(this).attr(‘href’), ‘_blank’, ‘width=950, height=850’);

// stop default and other behaviour
e.preventDefault();
e.stopImmediatePropagation();
});

});