#main_container {filter:alpha(Opacity=80);-moz-opacity:0.8;opacity: 0.8;}
<!--
.AutomLeaf {
	position:fixed;
	opacity:0;
	z-index:0
}
.AutomLeaffalling {
	position:fixed;
	top:0;
	left:0;
	opacity:0;
	z-index:0
}
.inFront {
	z-index:100
}
.x1 {
	width:75px;
	height:75px
}
.x2 {
	width:100px;
	height:100px
}
.x3 {
	width:125px;
	height:125px
}
.x4 {
	width:150px;
	height:150px
}-->