.back {
	background-repeat: no-repeat;
	background-position: left center;
	background-attachment: fixed;
	z-index: auto;


}
.back2 {
	background-attachment: fixed;
	background-repeat: repeat-x;
	background-position: center 74px;
}
.img {
	background-attachment: scroll;
	background-repeat: no-repeat;
	background-position: center center;
}
.normal {
	background-repeat: repeat-x;
	background-attachment: fixed;

}
