Linking from Page to Tab on Same Page

I’ve created a text link button on a product page that I’m trying to get to link to a tab on the same page.

I’ve read a lot on how to do it but I can’t get it to work.

My link looks like this: ORDER.

Then the tab on the product page simply appears as a DIV as follows:


If I have that tab active, the link works, but when you initially open a product page, the Description tab is active, which is what I want.

How can I get the link to work properly when that tab is not active?