If it was me, I'm not sure i would hide the row from the user, because as an example, what happens if I accidentally select the "9" choice? by hiding the row from the user's view, you do not give them the ability to fix that mistake...
none the less, you can do what you seek without worrying about breaking up and parsing out the id's of the controls/rows, jQuery's "parent()" selector makes this easy: case in point: http://jsbin.com/uberi/edit also note the usage of event delegation, which allows one single DOM object, the <table>, to have the event latched onto it, which may be a big resource saver if you've got a ton of these rows/radio-buttons....
