ac = new Image();
ac.src = "images/ac.gif";
ac_hi = new Image();
ac_hi.src = "images/acx.gif";
pa = new Image();
pa.src = "images/pa.gif";
pa_hi = new Image();
pa_hi.src = "images/pax.gif";
ca = new Image();
ca.src = "images/ca.gif";
ca_hi = new Image();
ca_hi.src = "images/cax.gif";
td = new Image();
td.src = "images/td.gif";
td_hi = new Image();
td_hi.src = "images/tdx.gif";
fa = new Image();
fa.src = "images/fa.gif";
fa_hi = new Image();
fa_hi.src = "images/fax.gif";
ea = new Image();
ea.src = "images/ea.gif";
ea_hi = new Image();
ea_hi.src = "images/eax.gif";