#my_header{
	position: absolute;	 top:0px; left:0px;
	 width : 100%;
	 height : 50px; 
	 font-size : 150%;
	 font-weight: bold;
	 text-align: center;
	}
	
	#menu {
		position: absolute; top:570px;
		width : 100%; 
		margin-left:auto;
		margin-right: auto;
		text-align : center;
	}
	
	#my_footer{
		width: 100%; 
		clear:both;
		position: absolute; top:690px;
		color: cadetblue;
		text-align: right;
		filter:alpha(opacity=80);
    	-moz-opacity: 0.8;
    	opacity: 0.8;
	}