#toplevel_page_simpleTracking div.wp-menu-image {
background: transparent url(trackingHover.png) no-repeat 0 0;
}

#toplevel_page_simpleTracking:hover div.wp-menu-image, #toplevel_page_simpleTracking.current div.wp-menu-image {
background: transparent url(trackingHover.png) no-repeat scroll 0 -28px;
}

#icon-simpleTracking {
background:url(icon32.png) no-repeat transparent;
}

#icon-simpleTracking:hover {
background-position: 0 -36px;
}