.normal{
}
.tetris {
	background-attachment: fixed;
	background-image: url(../img/tetris_over.gif);
	background-repeat: no-repeat;
	background-position: left center;
	cursor:hand;
}
.blubs {
	background-attachment: fixed;
	background-image: url(../img/blubs_over.gif);
	background-repeat: no-repeat;
	background-position: left center;
	cursor:hand;
}
.contactar {
	background-attachment: fixed;
	background-image: url(../img/contactar_over2.gif);
	background-repeat: no-repeat;
	background-position: left top;
	cursor:hand;
}
.registrate {
	background-attachment: fixed;
	background-image: url(../img/registrate_over2.gif);
	background-repeat: no-repeat;
	background-position: left top;
	cursor:hand;
}
.ayuda {
	background-attachment: fixed;
	background-image: url(../img/ayuda_over2.gif);
	background-repeat: no-repeat;
	background-position: left top;
	cursor:hand;
}