Hi Dustin,
Thanks for your question. I'm afraid the jQuery extensions don't have any capability to run conditionally (i.e by URL). The only way to really try to limit this is to use a selector which is able to use an element on the page to help you refine it.
What I would do is write my own jQuery in a 'javascript' extension scoped to 'dom ready'. For example:
if(document.location.href.indexOf('YOUR CRITERIA) > -1){
jQuery(document.body).on('mousedown','#divid',function(e){
utag.link({
event_name:'great event',
event_detail:this.href
});
);
}
If you have any questions it might be worth reaching out to your local support team for assistance.
Hope this helps!
Cheers,
Roshan