Hi there, sorry to bother you guys again but i came up with some new questions.
I want to try and with a button click on it a an image apears and disapears, but so far i only got this piece of code 
botao.addEventListener(MouseEvent.CLICK, mudaimagem);
function mudaimagem (event:MouseEvent):void {
if (event.currentTarget.selected == true) { imagem.visible = false; } else { imagem.visible = true;
}
}
But the thing is ... when i press "CTRL + ENTER" the image still stays on the stage and when i click the button it does not make the image hide.
i would like to have some help to know what i am doing wrong ... i have a filing that "if (event.currentTarget.selected == true)" is the thing wrong ... but i am not sure
And also if the is a way to do the mouse over on button and image apears the disapear when mouse is not over, i would like to know 
Thanks for the patince and NOOB questions that i am making.
Regards ASilva