expected. Insert a semicolon at the end (UCE0001)

I try to build this script. But an error occured. How can I solve this???

using UnityEngine;
using System.Collections;
 
public class Menu : MonoBehaviour 
{
    public GUISkin guiSkin;
    public Texture2D background, LOGO;
    public bool DragWindow = false;
    public string levelToLoadWhenClickedPlay = "";
    public string[] AboutTextLines = new string[0];
 
 
    private string clicked = "", MessageDisplayOnAbout 

= "About 

";
private Rect WindowRect = new Rect((Screen.width /

2) - 100, Screen.height / 2, 200, 200);
    private float volume = 1.0f;
 
    private void Start()
    {
        for (int x = 0; x < AboutTextLines.Length;x++ )
        {
            MessageDisplayOnAbout += AboutTextLines[x] 

+ " 

";
}
MessageDisplayOnAbout += "Press Esc To Go

Back";
    }
 
    private void OnGUI()
    {
        if (background != null)
            GUI.DrawTexture(new Rect(0,0,Screen.width , 

Screen.height),background);
        if (LOGO != null && clicked != "about")
            GUI.DrawTexture(new Rect((Screen.width / 2) 

- 100, 30, 200, 200), LOGO);
 
        GUI.skin = guiSkin;
        if (clicked == "")
        {
            WindowRect = GUI.Window(0, WindowRect, 

menuFunc, "Main Menu");
        }
        else if (clicked == "options")
        {
            WindowRect = GUI.Window(1, WindowRect, 

optionsFunc, "Options");
        }
        else if (clicked == "about")
        {
            GUI.Box(new Rect 

(0,0,Screen.width,Screen.height), 

MessageDisplayOnAbout);
        }else if (clicked == "resolution")
        {
            GUILayout.BeginVertical();
            for (int x = 0; x < 

Screen.resolutions.Length;x++ )
            {
                if (GUILayout.Button

(Screen.resolutions[x].width + "X" + 

Screen.resolutions[x].height))
                {
                    Screen.SetResolution

(Screen.resolutions[x].width,Screen.resolutions

[x].height,true);
                }
            }
            GUILayout.EndVertical();
            GUILayout.BeginHorizontal();
            if (GUILayout.Button("Back"))
            {
                clicked = "options";
            }
            GUILayout.EndHorizontal();
        }
    }
 
    private void optionsFunc(int id)
    {
        if (GUILayout.Button("Resolution"))
        {
            clicked = "resolution";
        }
        GUILayout.Box("Volume");
        volume = GUILayout.HorizontalSlider(volume 

,0.0f,1.0f);
        AudioListener.volume = volume;
        if (GUILayout.Button("Back"))
        {
            clicked = "";
        }
        if (DragWindow)
            GUI.DragWindow(new Rect 

(0,0,Screen.width,Screen.height));
    }
 
    private void menuFunc(int id)
    {
        //buttons 
        if (GUILayout.Button("Play Game"))
        {
            //play game is clicked
            Application.LoadLevel

(levelToLoadWhenClickedPlay);
        }
        if (GUILayout.Button("Options"))
        {
            clicked = "options";
        }
        if (GUILayout.Button("About"))
        {
            clicked = "about";
        }
        if (GUILayout.Button("Quit Game"))
        {
            Application.Quit();
        }
        if (DragWindow)
            GUI.DragWindow(new Rect(0, 0, Screen.width, 

Screen.height));
    }
 
    private void Update()
    {
        if (clicked == "about" && Input.GetKey 

(KeyCode.Escape))
            clicked = "";
        }
    }

menu.js(1,6): UCE0001: ‘;’ expected. insert a semicolon at the end.