// preloads
home_on = new Image();
home_on.src = "images/buttons/btn_home_on.gif";
employment_on = new Image();
employment_on.src = "images/buttons/btn_employment_on.gif";
find_on = new Image();
find_on.src = "images/buttons/btn_find_on.gif";
contact_on = new Image();
contact_on.src = "images/buttons/btn_contact_on.gif";
members_on = new Image();
members_on.src = "images/buttons/btn_members_on.gif";

plank = new Image();
plank.src = "images/buttons/plank.gif";