home = new Image();
home.src = "images/home_r.gif";

ask = new Image();
ask.src = "images/ask_r.gif";

ion = new Image();
ion.src = "images/ion_r.gif";

locate = new Image();
locate.src = "images/locate_r.gif";

exhibit = new Image();
exhibit.src = "images/exhibit_r.gif";

media = new Image();
media.src = "images/media_r.gif";