GRIDMARKET THEME

QUESTION 1:

I've created a new Child Theme of Grid Market and I've customized a few things in this theme, but I need to know how to get information about the current product page that I am viewing. On my sidebar I am displaying the Global Categories and when someone clicks that it brings up the products, but I want to be able to know which category they are viewing and highlight it on the side bar.

QUESTION 2:

Is it also possible to have the search function search all the categories and products that are in the Global Marketplace on my site.

(I've submitted a screenshot of the menu.)

Thank you,

Anthony