remove row when pressed DEL

I want to remove a row when I press del. The best way to do so is to set "display" on "none", but I can't find out how to access the row only.

I've got this atm:
obj.setEvent("onkeydown", readChar);
function readChar(e) {
    var key = e.keyCode;
    switch(key) {
        case 46:
            answer = confirm("Are you sure ?");
            if (answer) {
                e.setStyle("display", "none"); // This doesn't work ;)
            }
            break;
    }
}
document.write(obj);