/*#topNav.xmas {
	background-image: url("/images/xmas_deco.png");
	background-position: -48px -143px;
	background-repeat: no-repeat;
}
.overlay {
	background-image: url('/images/xmas/snow1.png'), 
	url('/images/xmas/snow2.png'), 
	url('/images/xmas/snow3.png');
	-webkit-animation: snow 20s linear infinite;
	-moz-animation: snow 20s linear infinite;
	-ms-animation: snow 20s linear infinite;
	animation: snow 20s linear infinite;
}


Keyframes
@keyframes snow {
 0% {background-position: 0px 0px;}
 100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}
 
@-moz-keyframes snow {
 0% {background-position: 0px 0px;}
 100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}
 
@-webkit-keyframes snow {
0% {background-position: 0px 0px;}
 100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}
 
@-ms-keyframes snow {
 0% {background-position: 0px 0px;}
 100% {background-position: 500px 1000px, 400px 400px, 300px 300px;}
}*/