[error] end expected to close function?

I just cant figure out what's wrong with it. Help would be gladly appreciated.

hear is the code.

function a()
turtle.back()
turtle.place()
turtle.turnRight()
turtle.turnRight()
if turtle.detect() then
turtle.up()
turtle.placeDown()
shel.exit()
end
else
turtle.turnRight()
turtle.turnRight()
end
end
function p()
turtle.select(1)
a()
end
if turtle.getItemCount(1) == 0 then
turtle.select(2)
a()
end
while true do
p()
end

The problem is here:

if turtle.detect() then
  turtle.up()
  turtle.placeDown()
  shel.exit()
end -- extra end
else
  turtle.turnRight()
  turtle.turnRight()
end

The if syntax is:

if <condition> then
  -- code
else
  -- code
end

wow i cant beleve i over looked that. Thanks! :(/>/>

[EDIT]
beaten by 7 mins ow well

you use a "end" an the end of an if. you don't need it before the else part only at then end

FIXED

Spoiler

function a()
	turtle.back()
	turtle.place()
	turtle.turnRight()
	turtle.turnRight()
	sleep(2)
	if turtle.detect() then
		turtle.up()
		turtle.placeDown()
        shell.exit() -- spelling
	else
		turtle.turnRight()
		turtle.turnRight()
	end
end
function p()
	turtle.select(1)
	a()
end
if turtle.getItemCount(1) == 0 then
turtle.select(2)
a()
end
while true do
	p()
end