.overlay___invisible__ {
  	background-color: #FAF0E7;
	filter:alpha(opacity=0);
	-moz-opacity: 0;
	opacity: 0;
	border:1px solid #00FF00}

.overlay_chargement {
	background-color: #FAF0E7;
	filter:alpha(opacity=60);
	-moz-opacity: 0.6;
	opacity: 0.6;
}