var stop=false;
function fadeIn(idImg,value,passo,tempo){
	if(stop)
		return false;
	if(value > 10 || value < 0){
		fadeOut(idImg,10,0.1,300);
		return false;
	}
	value = value + passo;
	obj = document.getElementById(idImg);
	obj.style.opacity = value/10;
	obj.style.filter = 'alpha(opacity=' + value*10 + ')';
	setTimeout("fadeIn('"+idImg+"',"+value+","+passo+")",tempo+(tempo*2));
}

function fadeOut(idImg,value,passo,tempo){
	if(stop)
		return false;
	if(value > 10 || value < 0){
		fadeIn(idImg,0,0.1,300);
		return false;
	}
	value = value - passo;
	obj = document.getElementById(idImg);
	obj.style.opacity = value/10;
	obj.style.filter = 'alpha(opacity=' + value*10 + ')';
	setTimeout("fadeOut('"+idImg+"',"+value+","+passo+")",tempo+(tempo*2));
}