Gui problems!

--Vars
build = 3
--Functions
function drawBackgroundDesktop(x, y)
drawBackground = paintutils.loadImage("/gliese/sysfiles/background")
paintutils.drawImage(drawBackground, x, y)
screenX, screenY = term.getSize()
end
while true do
term.setBackgroundColor(colors.white)
drawBackgroundDesktop(13 ,3)
paintutils.drawLine(1, 1, screenX, 1, colors.blue)
term.setTextColor(colors.black)
term.setCursorPos(1, 1)
print("[Menu]")
local event, button, x, y = os.pullEvent("mouse_click")
if event == "mouse_click" then
  if x >=1 and 6 <= x then
   if y == 1 then
    paintutils.drawLine(1, 1, 6, 1, colors.lightGray)
    paintutils.drawLine(1, 2, 8, 2, colors.lightGray)
    paintutils.drawLine(1, 3, 8, 4, colors.lightGray)
    paintutils.drawLine(1, 4, 8, 4, colors.lightGray)
    term.setCursorPos(1, 1)
    print("[Menu]")
    print("Run")
    print("Settings")
    print("Taco")
    print("Shutdown")
    print("Restart")
    b = false
    local event, button, x, y = os.pullEvent("mouse_click")
    if event == "mouse_click" then
	 if x >= 1 and x <= 8 then
	  term.setBackgroundColor(colors.white)
	  term.clear()
	  paintutils.drawLine(1, 1, screenX, 1, colors.gray)
	  term.setTextColor(colors.black)
	  term.setBackgroundColor(colors.white)
	  if y == 2 then -- run
	   term.setCursorPos(1, 3)
	   print("Run")
	   cmd = read()
	   shell.run(cmd)
	  elseif y == 3 then
	   term.setCursorPos(1, 4)
	   print("Settings")
	   shell.run("/rom/programs/colors/paint")
	  elseif y == 4 then
	   term.setCursorPos(1, 5)
	   print("Taco")
	   shell.run("taco")
	  elseif y == 5 then
	   term.setCursorPos(1, 6)
	   print("Shutdown")
	   os.shutdown()
	  elseif y == 6 then
	   term.setCursorPos(1, 7)
	   print("Restart")
	   os.reboot()
	  end
	 end
    end
   end
  end
end
end