11155 JS Validation Form

Good day, I currently have an order page which you can view on the following URL : [login to view URL] Go to the order page by clicking "Order" in the navigation. This form works with runtime JS validation. In other words...it simply checks which fields are left empty, etc. Everything is working perfectly fine, but some of them are not mandatory, which I need to make mandatory. In other words, the JS will give a popup prompting the user to fill those empty fields if they were left empty. Summary : I need 2 fields to be mandatory and functioning like the other ones. Please quote for these two fields. I'm sure this won't be too hard. I just don't have any experience with JS, and it gives me a headache. All the best, Contridi