.curves {
	background-attachment: fixed;
	background-image: url(images/curves.gif);
	background-repeat: no-repeat;
	background-position: left bottom;
}
.curves2 {
	background-image: url(images/curves2.gif);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: left top;
}
.curves3 {
	background-attachment: fixed;
	background-image: url(images/curves4.gif);
	background-repeat: no-repeat;
	background-position: left bottom;
}
.curves4 {
	background-attachment: fixed;
	background-image: url(images/curves4a.gif);
	background-repeat: no-repeat;
	background-position: left top;
}