Show specific plan on page load?

I’ve a comparison table showing different running plans, and I’d like to link to the page showing the table from pages that describe the plans in more detail (which I can do) but then when the page loads (especially on a tablet or mobile), I’d like to have the comparison show the matching plan.

For example, If my users are viewing https://f1r2a.com/pricing/train-for-event/ I’d like to be able to link to (e.g.) https://f1r2a.com/pricing/?EAEC-plan=train-for-event and have EAE comparison show the “Train for Event” product.

Is there some jscript I could add to my page to show the page as if the user has selected the “Train for Event” plan?

The page I need help with: [log in to see the link]