VGA Based Menus

[RossComputerGuy]

Can anyone help me fix this code? Whenever I push a key, it goes and moves to cursor too far.

function InstalerLang() {
	var fg = runtime.tty.color.WHITE;
	var bg = runtime.tty.color.BLUE;

	runtime.tty.moveTo(0,0);
	runtime.tty.print(" ",(80 * 25) + 80,fg,bg);
	runtime.tty.moveTo((80 - ("Language".length))/2,0);
	runtime.tty.print("Language",1,fg,bg);

	var x = 6;
	var y = 5;

	const locals = require("/sys/config/locals.json");

	for(var i = 0;i < Object.keys(locals).length;i++) {
		runtime.tty.moveTo(x,y+i);
		var local = locals[Object.keys(locals)[i]];
		runtime.tty.print(local.name+" -> "+local.region,1,fg,bg);
	}

	runtime.tty.moveTo(x-2,y);
	runtime.tty.print("[",1,fg,bg);
	runtime.tty.moveTo(x+locals[Object.keys(locals)[0]].name.length+(" -> ").length+locals[Object.keys(locals)[0]].region.length+1,y);
	runtime.tty.print("]",1,fg,bg);

	var changed = false;

	runtime.ps2.setKeyboardDriver({
		init: function(ops) {
			while(true) {
				if(ops.ioPort.read8() == 0x48 || ops.ioPort.read8() == 0x50 && changed == false) {
					if(ops.ioPort.read8() == 0x48 && y > 5 && changed == false) {
						changed = true;
						y--;
					} else if(ops.ioPort.read8() == 0x50 && y < y+Object.keys(locals).length && changed == false) {
						changed = true;
						y++;
					}
				} else if(changed == true) {
					changed = false;

					runtime.tty.moveTo(x-2,y-1);
					runtime.tty.print(" ",1,fg,bg);
					runtime.tty.moveTo(x+locals[Object.keys(locals)[0]].name.length+(" -> ").length+locals[Object.keys(locals)[0]].region.length+1,y-1);
					runtime.tty.print(" ",1,fg,bg);

					runtime.tty.moveTo(x-2,y+1);
					runtime.tty.print(" ",1,fg,bg);
					runtime.tty.moveTo(x+locals[Object.keys(locals)[0]].name.length+(" -> ").length+locals[Object.keys(locals)[0]].region.length+1,y+1);
					runtime.tty.print(" ",1,fg,bg);

					runtime.tty.moveTo(x-2,y);
					runtime.tty.print("[",1,fg,bg);
					runtime.tty.moveTo(x+locals[Object.keys(locals)[0]].name.length+(" -> ").length+locals[Object.keys(locals)[0]].region.length+1,y);
					runtime.tty.print("]",1,fg,bg);
				}
			}
		},
		reset: function() {}
	});
}