a#fourth_top_nav_button{
	width:100px;
	background-image: url("../../images/main_page_images/top_button_fourth_off2.jpg");
}
a#fourth_top_nav_button:hover{
	background-image: url("../../images/main_page_images/top_button_fourth_on2.jpg");
}
a#sixth_top_nav_button{
	display:block;
	width:79px;
	height:27px;
	background-image: url("../../images/main_page_images/top_button_sixth_off.jpg");
	float:left;
}
a#sixth_top_nav_button:hover{
	display:block;
	background-image: url("../../images/main_page_images/top_button_sixth_on.jpg");
	float:left;
}