Multiple functions in a single button not working

I'm attempting to make a build menu, RTS style, in which several buttons with graphics appear when you right-click, then you click one of those buttons, it prints the button's name, then turns the build menu off.

So far I have gotten the build menu to turn on with right click, show the buttons in their proper places, assign textures to those buttons, have the build menu turn off when I right click, make the window dragable... but when I click one of the buttons nothing happens.

What exactly am I doing wrong here? The button code worked just fine until I put buildMenuOn = false; in there.

(Yes, this is designed to have 2 rows of 4 buttons each. I haven't yet made textures or assigned the other buttons yet, and only have 3 so far.)

 #pragma strict
 
 var buildMenuOn : boolean;
 var buildRect : Rect = Rect (20,20,235,300);
 
 // Textures for the buttons
 var buttLivingQuarters : Texture;
 var buttCafeteria : Texture;
 var buttMedical : Texture;
 
 function Start () 
 {
 var buildMenuOn = false; // the build menu starts out off
 }
 
 function Update () 
 {
     if (Input.GetButtonDown("Fire2")) // if right mouse button is clicked
     {
         if(buildMenuOn) // if the build menu is visible
         {
             buildMenuOn = false; // turn it off
         }
         else // if the build menu is not on
         {
             OnGUI(); // bring up the build menu GUI
             buildMenuOn = true; // turn the build menu on
         }
     }
 }
 
 
 
 function OnGUI()
 {
     if(buildMenuOn)
     {
             buildRect = GUI.Window(0,buildRect,BuildWindow,"Please select your Prefab");
     }
 }
 
 function BuildWindow(windowID: int)
 {
         // Draggable Windows
         GUI.DragWindow(Rect(0,0,10000,10000));
         
         //build button controls
         
         // top line
         if (GUI.Button(Rect(10,20,50,50),buttLivingQuarters))
         {
             print("Living Quarters");
             buildMenuOn = false;
         }
         
         if (GUI.Button(Rect(65,20,50,50),buttMedical))
         {
             print("Medical");
             buildMenuOn = false;
         }
         
         if (GUI.Button(Rect(120,20,50,50),buttLivingQuarters))
         {
             print("Living Quarters");
             buildMenuOn = false;
         }
         
         if (GUI.Button(Rect(175,20,50,50),buttLivingQuarters))
         {
             print("Living Quarters");
             buildMenuOn = false;
         }
         
         
         //second line
         if (GUI.Button(Rect(10,75,50,50),buttCafeteria))
         {
             print("Living Quarters");
             buildMenuOn = false;
         }
         
         if (GUI.Button(Rect(65,75,50,50),buttCafeteria))
         {
             print("Living Quarters");
             buildMenuOn = false;
         }
         
         if (GUI.Button(Rect(120,75,50,50),buttCafeteria))
         {
             print("Living Quarters");
             buildMenuOn = false;
         }
         
         if (GUI.Button(Rect(175,75,50,50),buttCafeteria))
         {
             print("Living Quarters");
             buildMenuOn = false;
         }
 }