#box
{
	position: absolute; 
	left: 300px; 
	top: 100px; 
	width:580px;
	z-index: 20;
	display: none;
}
#fechar
{
	position: absolute; 
	width:40px;
	z-index: 20;
	display: none;
}

.fechar{
	
}
#screen
{
	position: absolute;
	left: 0;
	top: 0;
	background: #000;
}