Corotine? Please help me...

So what I've been doing is this, but it seams stupid to put a function inside a function, is there a way I can combine the name with the corotine with being able to call the function at any time I want to?

local message=function(text)
coroutine.resume(coroutine.create(function()
guiFrame.Msg.Text=text
wait(.15)
guiFrame.Msg.Text=''
end))
end

function funcName(params)
	--code
end

Is just syntactic sugar for.

funcName = function(params)
	--code
end

There isn't a way to just bind a coroutine to a re-usable function that I know of, but if you want to pass in the parameter to the coroutine function, do this:

local message=function(text)
	coroutine.resume(coroutine.create(function(txt) --parameter in inner function
		guiFrame.Msg.Text = txt --parameter in inner function
		wait(.15)
		guiFrame.Msg.Text = ""
	end), text) --parameter *from* outer function. Note the parentheses placement.
end