Error 1013: The private attribute may be used only on class property definitions.

Hi i have this code and get the error stated above. This isn't my code I am an absolute noob and someone with far more skill created it. I've looked on the forum and seen it has something to do with the curly braces but i can't quite figure it out. any help would be appreciated.

the error is here:

Line 102, Column 3 1013: The private attribute may be used only on class property definitions.

The corresponding line of code is:

private function onKeyboard(event: KeyboardEvent): void{

package {
	import flash.desktop.NativeApplication;
	import flash.display.MovieClip;
	import flash.display.SimpleButton;
	import flash.display.DisplayObjectContainer;
	import flash.display.StageDisplayState;
	import flash.text.TextField;
	import flash.text.TextFieldType;
	import flash.events.FocusEvent;
	import flash.events.MouseEvent;
	import flash.events.KeyboardEvent;
	import flash.events.TimerEvent;
	import flash.utils.Timer;
	import flash.ui.Keyboard;
	import flash.ui.Mouse;
	import flash.media.Sound;
	import Timekeeper;
	import TimekeeperEvent;
	import flash.media.SoundChannel;

	public class FlashPLAB extends MovieClip {
		var promptDoc: DisplayObjectContainer;
		var promptUp: TextField;
		var promptOver: TextField;
		var promptDn: TextField;

		var prompt2Up: TextField;
		var prompt2Over: TextField;
		var prompt2Dn: TextField;

		var newCounter: Timekeeper;
		var remaining: int;

		var clockTimer: Timer;
		var time: Date;

		var StartStage: Number;
		var FinalStage: Number;
		var CurrentStage: Number;
		var StageTime: Number;
		var IntTime: Number;
		var PromptTime: Number;
		var Prompt2Time: Number;

		var PlayDing: audDing;
		var PlayIntro: audIntro;
		var PlayBegin: audBegin;
		var PlayNext: audNext;
		var PlayEnd: audEnd;
		var Play30: audRem30;
		var Play60: audRem60;
		var Play90: audRem90;
		var Play120: audRem120;
		var Play3Min: audRem3min;
		var Play4Min: audRem4min;
		var Play5Min: audRem5min;
		var Play6Min: audRem6min;

		var DingChannel: SoundChannel;
		var VoxChannel: SoundChannel;
	}
		public function FlashPLAB() {
			PlayDing = new audDing;
			PlayIntro = new audIntro;
			PlayBegin = new audBegin;
			PlayNext = new audNext;
			PlayEnd = new audEnd;
			Play30 = new audRem30;
			Play60 = new audRem60;
			Play90 = new audRem90;
			Play120 = new audRem120;
			Play3Min = new audRem3min;
			Play4Min = new audRem4min;
			Play5Min = new audRem5min;
			Play6Min = new audRem6min;

			stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyboard);
			stage.displayState = StageDisplayState.FULL_SCREEN_INTERACTIVE;

			clockTimer = new Timer(1000);
			clockTimer.addEventListener(TimerEvent.TIMER, onClockTick);

			newCounter = new Timekeeper();
			newCounter.setRealTimeValue();
			newCounter.setRealTimeTick();

			LoadFrame(1);

			StartStage = Number(textStart.text);
			FinalStage = Number(textStations.text);
			StageTime = Number(textStageMins.text);
			IntTime = Number(textIntSeconds.text);
			if (promptUp.text != "Off") {
				PromptTime = Number(promptUp.text);
			} else {
				PromptTime = 0;
			}

			stage.addEventListener(MouseEvent.CLICK, onStageClick);
		}

		private function onKeyboard(event: KeyboardEvent): void{
			switch (event.keyCode) {
				case Keyboard.F12:
					NativeApplication.nativeApplication.exit();
					break;
				case Keyboard.ESCAPE:
					event.preventDefault();
					if (this.currentFrame == 4 || this.currentFrame == 5) {
						newCounter.removeEventListener(TimekeeperEvent.CHANGE, onCountTick);
					}
					if (this.currentFrame != 1) {
						LoadFrame(1)
					};
					break;
			}
		}

		private function LoadFrame(frame: Number): void {
			this.gotoAndPlay(frame);
			this.stop();
			clockTimer.stop();

			switch (frame) {
				case 1:
					textStart.restrict = "0-9";
					textStations.restrict = "0-9";
					textStageMins.restrict = "0-9";
					textIntSeconds.restrict = "0-9";
					textStart.addEventListener(FocusEvent.FOCUS_OUT, onLeaveStart);
					textStart.addEventListener(FocusEvent.FOCUS_IN, onFocusText);
					textStations.addEventListener(FocusEvent.FOCUS_OUT, onLeaveStations);
					textStations.addEventListener(FocusEvent.FOCUS_IN, onFocusText);
					textStageMins.addEventListener(FocusEvent.FOCUS_OUT, onLeaveStageMins);
					textStageMins.addEventListener(FocusEvent.FOCUS_IN, onFocusText);
					textIntSeconds.addEventListener(FocusEvent.FOCUS_OUT, onLeaveIntSeconds);
					textIntSeconds.addEventListener(FocusEvent.FOCUS_IN, onFocusText);

					butPrompt.addEventListener(MouseEvent.CLICK, onPromptClick);

					promptDoc = DisplayObjectContainer(butPrompt.upState);
					promptUp = TextField(promptDoc.getChildAt(1));
					promptDoc = DisplayObjectContainer(butPrompt.overState);
					promptOver = TextField(promptDoc.getChildAt(1));
					promptDoc = DisplayObjectContainer(butPrompt.downState);
					promptDn = TextField(promptDoc.getChildAt(1));

					butPrompt2.addEventListener(MouseEvent.CLICK, onPrompt2Click);

					promptDoc = DisplayObjectContainer(butPrompt2.upState);
					prompt2Up = TextField(promptDoc.getChildAt(1));
					promptDoc = DisplayObjectContainer(butPrompt2.overState);
					prompt2Over = TextField(promptDoc.getChildAt(1));
					promptDoc = DisplayObjectContainer(butPrompt2.downState);
					prompt2Dn = TextField(promptDoc.getChildAt(1));



					butClock.addEventListener(MouseEvent.CLICK, onBClockClick);
					butStart.addEventListener(MouseEvent.CLICK, onStartClick);

					Mouse.show()
					break;
				case 2:
					clockBG.addEventListener(MouseEvent.CLICK, onClockClick);

					clockTimer.start();
					setClock();
					Mouse.hide();
					break;
				case 3:
					Mouse.hide();
					break;
				case 4:
					setCount(remaining);

					if (CurrentStage > FinalStage) {
						LoadFrame(6);
						break;
					} else {
						textStageTitle.text = "Stage " + String(CurrentStage);
					}

					if (DingChannel != null) {
						DingChannel.stop();
					}
					if (VoxChannel != null) {
						VoxChannel.stop();
					}
					DingChannel = PlayDing.play();
					if (CurrentStage == 1) {
						VoxChannel = PlayIntro.play();
					} else {
						VoxChannel = PlayNext.play();
					}
					break;
				case 5:
					setCount(remaining);
					textStageTitle.text = "Stage " + String(CurrentStage);

					if (DingChannel != null) {
						DingChannel.stop();
					}
					if (VoxChannel != null) {
						VoxChannel.stop();
					}
					DingChannel = PlayDing.play();
					VoxChannel = PlayBegin.play();
					break;
				case 6:
					newCounter.stopTicking();
					if (DingChannel != null) {
						DingChannel.stop();
					}
					if (VoxChannel != null) {
						VoxChannel.stop();
					}
					DingChannel = PlayDing.play();
					VoxChannel = PlayEnd.play();
					break;

			}
			stage.focus = this;

		}

		private function onCountTick(event: TimekeeperEvent): void {
			remaining -= 1;
			if (remaining == Prompt2Time && this.currentFrame == 5) {
				if (VoxChannel != null) {
					VoxChannel.stop();
				}
				switch (Prompt2Time) {
					case 180:
						VoxChannel = Play3Min.play();
						break;
					case 240:
						VoxChannel = Play4Min.play();
						break;
					case 300:
						VoxChannel = Play5Min.play();
						break;
					case 360:
						VoxChannel = Play6Min.play();
						break;
				}
			}
			if (remaining == PromptTime && this.currentFrame == 5) {
				if (VoxChannel != null) {
					VoxChannel.stop();
				}
				switch (PromptTime) {
					case 30:
						VoxChannel = Play30.play();
						break;
					case 60:
						VoxChannel = Play60.play();
						break;
					case 90:
						VoxChannel = Play90.play();
						break;
					case 120:
						VoxChannel = Play120.play();
						break;
				}
			} else if (remaining <= 0) {
				if (this.currentFrame == 4) {
					iniStation();
					LoadFrame(5);
				} else if (this.currentFrame == 5) {
					CurrentStage += 1;
					iniInterval();
					LoadFrame(4);
				}
				return;
			}
			setCount(remaining);

		}

		private function setCount(time: Number): void {
			var mins: Number = Math.floor(time / 60);
			var secs: Number = time - (60 * mins);

			if (secs > 9) {
				textRemain.text = String(mins) + ":" + String(secs);
			} else {
				textRemain.text = String(mins) + ":0" + String(secs);
			}
		}

		private function onStartClick(event: MouseEvent): void {
			event.stopPropagation();
			LoadFrame(3);
		}

		private function iniInterval(): void {
			remaining = IntTime;
		}

		private function iniStation(): void {
			remaining = StageTime * 60;
		}

		private function onStageClick(event: MouseEvent): void {
			switch (this.currentFrame) {
				case 3:
					CurrentStage = StartStage;
					iniInterval();
					newCounter.addEventListener(TimekeeperEvent.CHANGE, onCountTick);
					newCounter.startTicking();
					LoadFrame(4);
					break;
				case 4:
					//termInterval();
					iniStation();
					LoadFrame(5);
					break;
				case 5:
					//termStation();
					CurrentStage += 1;
					iniInterval();
					LoadFrame(4);
					break;
				case 6:
					LoadFrame(1);
					break;
			}
		}

		private function onClockClick(event: MouseEvent): void {
			LoadFrame(1);
		}

		private function onLeaveStart(event: FocusEvent): void {
			if (Number(textStart.text) > Number(textStations.text)) {
				textStart.text = textStations.text;
			}
			if (Number(textStart.text) < 1) {
				textStart.text = "1";
			}
			StartStage = (Number(textStart.text));
			textStart.text = String(StartStage);
		}

		private function onLeaveStations(event: FocusEvent): void {
			if (Number(textStations.text) > 40) {
				textStations.text = "40";
			}
			if (Number(textStations.text) < 1) {
				textStations.text = "20";
			}
			FinalStage = Number(textStations.text);
			textStations.text = String(FinalStage);
			if (Number(textStations.text) < Number(textStart.text)) {
				textStart.text = textStations.text;
			}
		}

		private function onLeaveStageMins(event: FocusEvent): void {
			if (Number(event.currentTarget.text) < 1) {
				event.currentTarget.text = "8";
			}
			StageTime = Number(event.currentTarget.text)
			event.currentTarget.text = String(StageTime);

		}

		private function onLeaveIntSeconds(event: FocusEvent): void {
			if (Number(event.currentTarget.text) < 1) {
				event.currentTarget.text = "90";
			}
			IntTime = Number(event.currentTarget.text)
			event.currentTarget.text = String(IntTime);
		}

		private function onFocusText(event: FocusEvent): void {
			event.target.text = "";
		}

		private function onPromptClick(event: MouseEvent): void {
			var current: String = promptUp.text;
			if (current == "Off") {
				setPromptText("30");
				PromptTime = 30;
			} else {
				var t: Number = Number(promptUp.text);
				t += 30;
				if (t >= (Number(textStageMins.text) * 60) || t > 120) {
					setPromptText("Off");
					PromptTime = 0;
				} else {
					setPromptText(String(t));
					PromptTime = t;
				}
			}
		}

		private function onPrompt2Click(event: MouseEvent): void {
			var current: String = prompt2Up.text;
			if (current == "Off") {
				if (Number(textStageMins.text) > 3) {
					setPrompt2Text("3");
					Prompt2Time = 180;
				}
			} else {
				var t: Number = Number(current);
				t += 1;
				if (t >= (Number(textStageMins.text)) || t > 6) {
					setPrompt2Text("Off");
					Prompt2Time = 0;
				} else {
					setPrompt2Text(String(t));
					Prompt2Time = t * 60;
				}
			}
		}

		private function setPromptText(v: String): void {
			promptUp.text = v;
			promptOver.text = v;
			promptDn.text = v;
		}

		private function setPrompt2Text(v: String): void {
			prompt2Up.text = v;
			prompt2Over.text = v;
			prompt2Dn.text = v;
		}

		private function onClockTick(event: TimerEvent): void {
			if (this.currentFrame == 2) {
				setClock();
			}
		}

		private function setClock(): void {
			time = new Date();
			clkSecs.rotation = time.seconds * 6;
			clkMins.rotation = time.minutes * 6;
			clkHours.rotation = time.hours * 30;
		}

		private function onBClockClick(event: MouseEvent): void {
			LoadFrame(2);
		}


	}

}