You first make these three levels(you already have them)

then you make a panel that has 3 buttons (see the manual)
these 3 buttons are call level loading functions like these:

Code:
function level_1()
{
    level_load("1.wmb");
    wait(2);
    reset(menu,VISIBLE);
}

I am a little too lazy to look it all up,
but I hope these directions are useful! laugh

Check out the throwing game here: The throwing game