Submit to another form jquery

[abrahamgarcia27]

I am totally new to coding and i came across a problem that i havent figured out how to do it.

 

I have a basic registration form with the following fields (Full Name, People Attending, Table Number, Waiter) The 'Table Number' Field calls a variable from another form so when i click on table Number a pop out window with jquery pops out with a Restaurant Table like Diagram. Each button which symbolizes a table has a numerical value. What i want to do is post the value selected from the table form into the Table field in my main form. I have gotten this far, but the problem is that when select a table it refreshes my original page. I was wondering if anyone had an idea how i could attack this problem.