html {
	background: url(../img/hp.jpg) no-repeat center center fixed; 
	filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../img/hp.jpg', sizingMethod='scale');
	-ms-filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../img/hp.jpg', sizingMethod='scale')";
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
	height:100%;
	min-height:100%;
}