Another GUI question

[Jimbo33]

I'm using a GUI that's opening when 'w' is pressed,
I want it to close when 'w' is pressed again, so players don't
have to move their mouse up to the little red x button.

Here's what I used:

PHP Code:

//#CLIENTSIDE
function onKeyPressed(code, key){
 if (key == "w") {
 onOpenStats();
 }
}

function onOpenStats() {
  new GuiWindowCtrl("Stats_Window1") {
 and blabla all the gui scripts... 


Please help, thanks!