if (document.images) {
var arrow = new Image();arrow.src = '../pix/g_arrow_sub.gif';
var arrow_on = new Image();arrow_on.src = '../pix/g_arrow_sub_on.gif';
var about_us = new Image();arrow.src = '../script/nav_about_us.gif';
var about_us_on = new Image();arrow.src = '../script/nav_about_us_on.gif';
var ce = new Image();arrow.src = '../script/nav_ce.gif';
var ce_on = new Image();arrow.src = '../script/nav_ce_on.gif';
var ct = new Image();arrow.src = '../script/nav_ct.gif';
var ct_on = new Image();arrow.src = '../script/nav_ct_on.gif';
var ed = new Image();arrow.src = '../script/nav_ed.gif';
var ed_on = new Image();arrow.src = '../script/nav_ed_on.gif';
var fre = new Image();arrow.src = '../script/nav_fre.gif';
var fre_on = new Image();arrow.src = '../script/nav_fre_on.gif';
var hc = new Image();arrow.src = '../script/nav_hc.gif';
var hc_on = new Image();arrow.src = '../script/nav_hc_on.gif';
var he = new Image();arrow.src = '../script/nav_he.gif';
var he_on = new Image();arrow.src = '../script/nav_he_on.gif';
var jobsnet = new Image();arrow.src = '../script/nav_jobsnet.gif';
var jobsnet_on = new Image();arrow.src = '../script/nav_jobsnet_on.gif';
var np = new Image();arrow.src = '../script/nav_np.gif';
var np_on = new Image();arrow.src = '../script/nav_np_on.gif';
var wifi = new Image();arrow.src = '../script/nav_wifi.gif';
var wifi_on = new Image();arrow.src = '../script/nav_wifi_on.gif';

}
function ChangeImg(id,name){
  if (document.images) {document.images[id].src=eval(name+".src"); }
}